TY  - CONF
AU  - Radović, Ivan
AU  - Kalinić, Ana
AU  - Karbunar, Lazar
AU  - Mišković, Zoran L.
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13132
AB  - In our recent publication we investigated the impact of plasmon-phonon hybridization on the stopping force acting on a charged particle moving parallel to a sandwich-like structure consisting of two graphene sheets separated by a layer of sapphire. In this work we evaluate the stopping force on a charged particle moving parallel to a graphene layer biased with a drift electric current supported by an insulating substrate. The dielectric function of the system is written in terms of the response function of graphene and the bulk dielectric function of the substrate. Focusing on the range of frequencies from THz to mid-infrared, the response function is expressed in terms of a frequency-dependent conductivity of graphene. The conductivity with a drift current is evaluated using the Galilean Doppler shift model. The energy loss function (the imaginary part of the negative value of the inverse dielectric function) and the stopping force are presented in the cases without and with drifting electrons, showing the effects of the drift velocity on the plasmon-phonon hybridization. The stopping force is also calculated when the drift and electron beam velocities have the same and opposite signs.
C3  - Conference "Catalysts for water splitting and energy storage"
T1  - Stopping force acting on a charged particle moving over a drift-current biased supported graphene
UR  - https://hdl.handle.net/21.15107/rcub_vinar_13132
ER  - 

@conference{
author = "Radović, Ivan and Kalinić, Ana and Karbunar, Lazar and Mišković, Zoran L.",
year = "2024",
abstract = "In our recent publication we investigated the impact of plasmon-phonon hybridization on the stopping force acting on a charged particle moving parallel to a sandwich-like structure consisting of two graphene sheets separated by a layer of sapphire. In this work we evaluate the stopping force on a charged particle moving parallel to a graphene layer biased with a drift electric current supported by an insulating substrate. The dielectric function of the system is written in terms of the response function of graphene and the bulk dielectric function of the substrate. Focusing on the range of frequencies from THz to mid-infrared, the response function is expressed in terms of a frequency-dependent conductivity of graphene. The conductivity with a drift current is evaluated using the Galilean Doppler shift model. The energy loss function (the imaginary part of the negative value of the inverse dielectric function) and the stopping force are presented in the cases without and with drifting electrons, showing the effects of the drift velocity on the plasmon-phonon hybridization. The stopping force is also calculated when the drift and electron beam velocities have the same and opposite signs.",
journal = "Conference "Catalysts for water splitting and energy storage"",
title = "Stopping force acting on a charged particle moving over a drift-current biased supported graphene",
url = "https://hdl.handle.net/21.15107/rcub_vinar_13132"
}

Radović, I., Kalinić, A., Karbunar, L.,& Mišković, Z. L.. (2024). Stopping force acting on a charged particle moving over a drift-current biased supported graphene. in Conference "Catalysts for water splitting and energy storage".
https://hdl.handle.net/21.15107/rcub_vinar_13132

Radović I, Kalinić A, Karbunar L, Mišković ZL. Stopping force acting on a charged particle moving over a drift-current biased supported graphene. in Conference "Catalysts for water splitting and energy storage". 2024;.
https://hdl.handle.net/21.15107/rcub_vinar_13132 .

Radović, Ivan, Kalinić, Ana, Karbunar, Lazar, Mišković, Zoran L., "Stopping force acting on a charged particle moving over a drift-current biased supported graphene" in Conference "Catalysts for water splitting and energy storage" (2024),
https://hdl.handle.net/21.15107/rcub_vinar_13132 .

TY  - CONF
AU  - Radović, Ivan
AU  - Kalinić, Ana
AU  - Karbunar, Lazar
AU  - Mišković, Zoran L.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11822
AB  - Electron energy loss spectroscopy (EELS) is a commonly used experimental technique for investigating electronic and plasmonic properties of materials, including van der Waals (vdW) materials [1]. Following Ref. [2] we derive a general expression for the effective dielectric function of multilayered structures made of two-dimensional (2D) vdW materials separated by insulating layers, in terms of the dielectric functions of the insulating layers and the 2D response functions of the vdW sheets, so the EEL spectrum of such structures may be deduced and compared with the available experimental data. In our previous publications [3-5] we investigated the effects of plasmon-phonon hybridization in graphene-insulator-graphene heterostructures. In all those publications we assumed a zero gap between graphene and insulator to simplify calculations. In this work we assign for the first time a finite gap size between graphene and insulator, and apply the general expression for the effective dielectric function of multilayered structures to the case of graphene-insulator-graphene composite. The energy loss function (the imaginary part of the negative value of the inverse dielectric function) is shown for the cases of graphene-insulator-graphene composite systems with and without the finite gap size between graphene and insulator in order to study the role of graphene-insulator distance on the hybridization between the Dirac plasmons in graphene layers and the Fuchs-Kliewer phonons in both surfaces of the insulator slab. The response function of each graphene is obtained using the dynamic polarization function of graphene within the random phase approximation for its π electrons described as Dirac’s fermions. The response of the insulator layer is described by a dielectric function consisting of several Lorentzian terms.
PB  - Belgrade : Vinča Institute of Nuclear Sciences
C3  - PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade
T1  - Electron energy loss spectroscopy of multilayered structures: Theoretical aspects and the role of graphene-insulator distance
SP  - 128
EP  - 128
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11822
ER  - 

@conference{
author = "Radović, Ivan and Kalinić, Ana and Karbunar, Lazar and Mišković, Zoran L.",
year = "2023",
abstract = "Electron energy loss spectroscopy (EELS) is a commonly used experimental technique for investigating electronic and plasmonic properties of materials, including van der Waals (vdW) materials [1]. Following Ref. [2] we derive a general expression for the effective dielectric function of multilayered structures made of two-dimensional (2D) vdW materials separated by insulating layers, in terms of the dielectric functions of the insulating layers and the 2D response functions of the vdW sheets, so the EEL spectrum of such structures may be deduced and compared with the available experimental data. In our previous publications [3-5] we investigated the effects of plasmon-phonon hybridization in graphene-insulator-graphene heterostructures. In all those publications we assumed a zero gap between graphene and insulator to simplify calculations. In this work we assign for the first time a finite gap size between graphene and insulator, and apply the general expression for the effective dielectric function of multilayered structures to the case of graphene-insulator-graphene composite. The energy loss function (the imaginary part of the negative value of the inverse dielectric function) is shown for the cases of graphene-insulator-graphene composite systems with and without the finite gap size between graphene and insulator in order to study the role of graphene-insulator distance on the hybridization between the Dirac plasmons in graphene layers and the Fuchs-Kliewer phonons in both surfaces of the insulator slab. The response function of each graphene is obtained using the dynamic polarization function of graphene within the random phase approximation for its π electrons described as Dirac’s fermions. The response of the insulator layer is described by a dielectric function consisting of several Lorentzian terms.",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences",
journal = "PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade",
title = "Electron energy loss spectroscopy of multilayered structures: Theoretical aspects and the role of graphene-insulator distance",
pages = "128-128",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11822"
}

Radović, I., Kalinić, A., Karbunar, L.,& Mišković, Z. L.. (2023). Electron energy loss spectroscopy of multilayered structures: Theoretical aspects and the role of graphene-insulator distance. in PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade
Belgrade : Vinča Institute of Nuclear Sciences., 128-128.
https://hdl.handle.net/21.15107/rcub_vinar_11822

Radović I, Kalinić A, Karbunar L, Mišković ZL. Electron energy loss spectroscopy of multilayered structures: Theoretical aspects and the role of graphene-insulator distance. in PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade. 2023;:128-128.
https://hdl.handle.net/21.15107/rcub_vinar_11822 .

Radović, Ivan, Kalinić, Ana, Karbunar, Lazar, Mišković, Zoran L., "Electron energy loss spectroscopy of multilayered structures: Theoretical aspects and the role of graphene-insulator distance" in PHOTONICA2023 : 9th International School and Conference on Photonics : book of abstracts; August 28 - September 1, 2023; Belgrade (2023):128-128,
https://hdl.handle.net/21.15107/rcub_vinar_11822 .

TY  - CONF
AU  - Kalinić, Ana
AU  - Radović, Ivan
AU  - Karbunar, Lazar
AU  - Despoja, Vito
AU  - Mišković, Zoran L.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12054
AB  - We derive general expressions for the stopping and image forces on an external charged particle moving parallel to a sandwich-like structure consisting of two doped graphene sheets separated by a layer of Al2O3 (sapphire)
C3  - Publications of the Astronomical Observatory of Belgrade
T1  - Interactions of ions with graphene-sapphire-graphene composite system: Stopping force and image force
VL  - 99
SP  - 97
EP  - 100
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12054
ER  - 

@conference{
author = "Kalinić, Ana and Radović, Ivan and Karbunar, Lazar and Despoja, Vito and Mišković, Zoran L.",
year = "2020",
abstract = "We derive general expressions for the stopping and image forces on an external charged particle moving parallel to a sandwich-like structure consisting of two doped graphene sheets separated by a layer of Al2O3 (sapphire)",
journal = "Publications of the Astronomical Observatory of Belgrade",
title = "Interactions of ions with graphene-sapphire-graphene composite system: Stopping force and image force",
volume = "99",
pages = "97-100",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12054"
}

Kalinić, A., Radović, I., Karbunar, L., Despoja, V.,& Mišković, Z. L.. (2020). Interactions of ions with graphene-sapphire-graphene composite system: Stopping force and image force. in Publications of the Astronomical Observatory of Belgrade, 99, 97-100.
https://hdl.handle.net/21.15107/rcub_vinar_12054

Kalinić A, Radović I, Karbunar L, Despoja V, Mišković ZL. Interactions of ions with graphene-sapphire-graphene composite system: Stopping force and image force. in Publications of the Astronomical Observatory of Belgrade. 2020;99:97-100.
https://hdl.handle.net/21.15107/rcub_vinar_12054 .

Kalinić, Ana, Radović, Ivan, Karbunar, Lazar, Despoja, Vito, Mišković, Zoran L., "Interactions of ions with graphene-sapphire-graphene composite system: Stopping force and image force" in Publications of the Astronomical Observatory of Belgrade, 99 (2020):97-100,
https://hdl.handle.net/21.15107/rcub_vinar_12054 .

TY  - CONF
AU  - Kalinić, Ana
AU  - Radović, Ivan
AU  - Karbunar, Lazar
AU  - Despoja, Vito
AU  - Mišković, Zoran L.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12676
AB  - In our recent publication1 we have studied the wake potential induced by an external charged particle that moves parallel to various sy1-Al2O3-sy2 composites, where syi (with i=1,2) may be vacuum, pristine graphene, or doped graphene. Several important parameters were fixed at their respective typical values: the distance of the charged particle from the closest surface, the thickness of the sapphire (aluminum oxide, Al2O3) layer, and the doping density (i.e., Fermi energy) of graphene. In this work we present a detailed study of the effects due to variations of all those parameters in the case of the wake potential produced by charged particle moving parallel to the graphene-Al2O3- graphene composite system, by using the dynamic polarization function of graphene within the random phase approximation for its π electrons described as Dirac’s fermions and by using a local dielectric function for the sapphire layer2 . For the velocity of the charged particle below the threshold for excitations of the Dirac plasmon in graphene, given by its Fermi velocity vF, strong effects are observed due to variation of the particle distance, while for the velocity of the charged particle above vF strong effects are observed due to varying the thickness of the Al2O3 layer, as well as due to graphene doping.
PB  - Gradec, Slovenija : Fakulteta za tehnologijo polimerov
C3  - COST Action CA15107 : Final Multicomp meeting : Book of Abstracts
T1  - Wake effect in interactions of ions with graphene-sapphire-graphene structure
SP  - 33
EP  - 33
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12676
ER  - 

@conference{
author = "Kalinić, Ana and Radović, Ivan and Karbunar, Lazar and Despoja, Vito and Mišković, Zoran L.",
year = "2020",
abstract = "In our recent publication1 we have studied the wake potential induced by an external charged particle that moves parallel to various sy1-Al2O3-sy2 composites, where syi (with i=1,2) may be vacuum, pristine graphene, or doped graphene. Several important parameters were fixed at their respective typical values: the distance of the charged particle from the closest surface, the thickness of the sapphire (aluminum oxide, Al2O3) layer, and the doping density (i.e., Fermi energy) of graphene. In this work we present a detailed study of the effects due to variations of all those parameters in the case of the wake potential produced by charged particle moving parallel to the graphene-Al2O3- graphene composite system, by using the dynamic polarization function of graphene within the random phase approximation for its π electrons described as Dirac’s fermions and by using a local dielectric function for the sapphire layer2 . For the velocity of the charged particle below the threshold for excitations of the Dirac plasmon in graphene, given by its Fermi velocity vF, strong effects are observed due to variation of the particle distance, while for the velocity of the charged particle above vF strong effects are observed due to varying the thickness of the Al2O3 layer, as well as due to graphene doping.",
publisher = "Gradec, Slovenija : Fakulteta za tehnologijo polimerov",
journal = "COST Action CA15107 : Final Multicomp meeting : Book of Abstracts",
title = "Wake effect in interactions of ions with graphene-sapphire-graphene structure",
pages = "33-33",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12676"
}

Kalinić, A., Radović, I., Karbunar, L., Despoja, V.,& Mišković, Z. L.. (2020). Wake effect in interactions of ions with graphene-sapphire-graphene structure. in COST Action CA15107 : Final Multicomp meeting : Book of Abstracts
Gradec, Slovenija : Fakulteta za tehnologijo polimerov., 33-33.
https://hdl.handle.net/21.15107/rcub_vinar_12676

Kalinić A, Radović I, Karbunar L, Despoja V, Mišković ZL. Wake effect in interactions of ions with graphene-sapphire-graphene structure. in COST Action CA15107 : Final Multicomp meeting : Book of Abstracts. 2020;:33-33.
https://hdl.handle.net/21.15107/rcub_vinar_12676 .

Kalinić, Ana, Radović, Ivan, Karbunar, Lazar, Despoja, Vito, Mišković, Zoran L., "Wake effect in interactions of ions with graphene-sapphire-graphene structure" in COST Action CA15107 : Final Multicomp meeting : Book of Abstracts (2020):33-33,
https://hdl.handle.net/21.15107/rcub_vinar_12676 .

TY  - CONF
AU  - Kalinić, Ana
AU  - Radović, Ivan
AU  - Despoja, Vito
AU  - Karbunar, Lazar
AU  - Mišković, Zoran L.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12679
AB  - We investigate the wake potential of different hybrid modes in the sy1-Al2O3-sy2 composites induced by charged particle moving parallel to the structure, as depicted in FIG. 1. This will be attained by exposing any wake patterns of the electrostatic potential in the surface closest to the incident particle. The three methods used in acquiring the effective dielectric function of the structure are based on the massless Dirac fermions (MDF), the extended hydrodynamic (eHD) model, and the ab initio approach. It is shown that in the low velocity regime (below graphene’s Fermi velocity, vF) transverse optical (TO) phonons in the Al2O3 layer give dominant contribution to the wake potential. In the intermediate velocity regime (above vF) it is the hybridized plasmon-TO phonon modes on both surfaces that give rise to the wake potential with hybridized Dirac plasmons giving the dominant contribution. For the high velocities (well above vF) only the symmetric hybridized Dirac plasmons are excited by the charged particle. It was found that ab initio approach agrees well with the MDF method at low and intermediate velocities for the pristine and doped graphene, and with eHD method at high velocities for pristine graphene layer
C3  - SFKM : 20. Simpozijum fizike kondenzovane materije = SCMP : the 20th Symposium on condensed matter physics : Book of abstracts
T1  - Wake potential in graphene-sapphire-graphene composite systems
SP  - 43
EP  - 43
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12679
ER  - 

@conference{
author = "Kalinić, Ana and Radović, Ivan and Despoja, Vito and Karbunar, Lazar and Mišković, Zoran L.",
year = "2019",
abstract = "We investigate the wake potential of different hybrid modes in the sy1-Al2O3-sy2 composites induced by charged particle moving parallel to the structure, as depicted in FIG. 1. This will be attained by exposing any wake patterns of the electrostatic potential in the surface closest to the incident particle. The three methods used in acquiring the effective dielectric function of the structure are based on the massless Dirac fermions (MDF), the extended hydrodynamic (eHD) model, and the ab initio approach. It is shown that in the low velocity regime (below graphene’s Fermi velocity, vF) transverse optical (TO) phonons in the Al2O3 layer give dominant contribution to the wake potential. In the intermediate velocity regime (above vF) it is the hybridized plasmon-TO phonon modes on both surfaces that give rise to the wake potential with hybridized Dirac plasmons giving the dominant contribution. For the high velocities (well above vF) only the symmetric hybridized Dirac plasmons are excited by the charged particle. It was found that ab initio approach agrees well with the MDF method at low and intermediate velocities for the pristine and doped graphene, and with eHD method at high velocities for pristine graphene layer",
journal = "SFKM : 20. Simpozijum fizike kondenzovane materije = SCMP : the 20th Symposium on condensed matter physics : Book of abstracts",
title = "Wake potential in graphene-sapphire-graphene composite systems",
pages = "43-43",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12679"
}

Kalinić, A., Radović, I., Despoja, V., Karbunar, L.,& Mišković, Z. L.. (2019). Wake potential in graphene-sapphire-graphene composite systems. in SFKM : 20. Simpozijum fizike kondenzovane materije = SCMP : the 20th Symposium on condensed matter physics : Book of abstracts, 43-43.
https://hdl.handle.net/21.15107/rcub_vinar_12679

Kalinić A, Radović I, Despoja V, Karbunar L, Mišković ZL. Wake potential in graphene-sapphire-graphene composite systems. in SFKM : 20. Simpozijum fizike kondenzovane materije = SCMP : the 20th Symposium on condensed matter physics : Book of abstracts. 2019;:43-43.
https://hdl.handle.net/21.15107/rcub_vinar_12679 .

Kalinić, Ana, Radović, Ivan, Despoja, Vito, Karbunar, Lazar, Mišković, Zoran L., "Wake potential in graphene-sapphire-graphene composite systems" in SFKM : 20. Simpozijum fizike kondenzovane materije = SCMP : the 20th Symposium on condensed matter physics : Book of abstracts (2019):43-43,
https://hdl.handle.net/21.15107/rcub_vinar_12679 .

TY  - CONF
AU  - Politano, A.
AU  - Radović, Ivan
AU  - Borka, Duško
AU  - Mišković, Zoran L.
AU  - Chiarello, G.
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12675
AB  - We present a theoretical modeling of the electron energy loss spectroscopy data for monolayer graphene supported by Pt(111), Ru(0001), and Ni(111) substrates. In order to reproduce the experimental loss function, we have used a two-dimensional, two-fluid hydrodynamic model for inter-band transitions of graphene’s π and σ electrons and an empirical Drude-Lorentz model in the local approximation for metal substrates. The agreement between the theoretical curves and the experimental data is very good in the cases of graphene supported by Pt and Ru substrates. Conversely, the agreement is less satisfactory for the case of graphene/Ni, presumably due to the strong hybridization between the π states of graphene and the d bands of Ni, which is not accounted for in the model.
PB  - Vilnius, Lithuania : Vilnius University, Physics Faculty
C3  - COST Action CA15107 meeting : “Multi-functional Nano-Carbon Composite Materials Network“ : Programme and abstracts
T1  - Theoretical modeling of experimental EELS data for monolayer graphene supported by different metal substrates
SP  - 31
EP  - 31
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12675
ER  - 

@conference{
author = "Politano, A. and Radović, Ivan and Borka, Duško and Mišković, Zoran L. and Chiarello, G.",
year = "2018",
abstract = "We present a theoretical modeling of the electron energy loss spectroscopy data for monolayer graphene supported by Pt(111), Ru(0001), and Ni(111) substrates. In order to reproduce the experimental loss function, we have used a two-dimensional, two-fluid hydrodynamic model for inter-band transitions of graphene’s π and σ electrons and an empirical Drude-Lorentz model in the local approximation for metal substrates. The agreement between the theoretical curves and the experimental data is very good in the cases of graphene supported by Pt and Ru substrates. Conversely, the agreement is less satisfactory for the case of graphene/Ni, presumably due to the strong hybridization between the π states of graphene and the d bands of Ni, which is not accounted for in the model.",
publisher = "Vilnius, Lithuania : Vilnius University, Physics Faculty",
journal = "COST Action CA15107 meeting : “Multi-functional Nano-Carbon Composite Materials Network“ : Programme and abstracts",
title = "Theoretical modeling of experimental EELS data for monolayer graphene supported by different metal substrates",
pages = "31-31",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12675"
}

Politano, A., Radović, I., Borka, D., Mišković, Z. L.,& Chiarello, G.. (2018). Theoretical modeling of experimental EELS data for monolayer graphene supported by different metal substrates. in COST Action CA15107 meeting : “Multi-functional Nano-Carbon Composite Materials Network“ : Programme and abstracts
Vilnius, Lithuania : Vilnius University, Physics Faculty., 31-31.
https://hdl.handle.net/21.15107/rcub_vinar_12675

Politano A, Radović I, Borka D, Mišković ZL, Chiarello G. Theoretical modeling of experimental EELS data for monolayer graphene supported by different metal substrates. in COST Action CA15107 meeting : “Multi-functional Nano-Carbon Composite Materials Network“ : Programme and abstracts. 2018;:31-31.
https://hdl.handle.net/21.15107/rcub_vinar_12675 .

Politano, A., Radović, Ivan, Borka, Duško, Mišković, Zoran L., Chiarello, G., "Theoretical modeling of experimental EELS data for monolayer graphene supported by different metal substrates" in COST Action CA15107 meeting : “Multi-functional Nano-Carbon Composite Materials Network“ : Programme and abstracts (2018):31-31,
https://hdl.handle.net/21.15107/rcub_vinar_12675 .

TY  - CONF
AU  - Đorđević, Tijana
AU  - Radović, Ivan
AU  - Borka, Duško
AU  - Mišković, Zoran L.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12674
AB  - We study the effects of variation in the doping density of graphene on hybridization taking place
between its Dirac plasmon and the surface optical phonon modes in a SiO2 substrate, and show that
this hybridization may be probed by a point charge that moves over graphene at a speed comparable
to graphene’s Fermi speed. Using the dielectric-response formalism within the random phase
approximation, we show that the plasmon-phonon hybridization exerts strong effects on the wake
pattern in the induced potential in the plane of graphene, as well as on the stopping and image forces
on the incident charge, in a manner that may be controlled by changing the doping density of
graphene.
PB  - Tallinn, Estonia : Tallinn University of Technology
C3  - 17th Baltic Polymer Symposium : Book of Abstracts
T1  - Probing the plasmon-phonon hybridization in supported graphene by externally moving charged particles
SP  - 72
EP  - 72
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12674
ER  - 

@conference{
author = "Đorđević, Tijana and Radović, Ivan and Borka, Duško and Mišković, Zoran L.",
year = "2017",
abstract = "We study the effects of variation in the doping density of graphene on hybridization taking place
between its Dirac plasmon and the surface optical phonon modes in a SiO2 substrate, and show that
this hybridization may be probed by a point charge that moves over graphene at a speed comparable
to graphene’s Fermi speed. Using the dielectric-response formalism within the random phase
approximation, we show that the plasmon-phonon hybridization exerts strong effects on the wake
pattern in the induced potential in the plane of graphene, as well as on the stopping and image forces
on the incident charge, in a manner that may be controlled by changing the doping density of
graphene.",
publisher = "Tallinn, Estonia : Tallinn University of Technology",
journal = "17th Baltic Polymer Symposium : Book of Abstracts",
title = "Probing the plasmon-phonon hybridization in supported graphene by externally moving charged particles",
pages = "72-72",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12674"
}

Đorđević, T., Radović, I., Borka, D.,& Mišković, Z. L.. (2017). Probing the plasmon-phonon hybridization in supported graphene by externally moving charged particles. in 17th Baltic Polymer Symposium : Book of Abstracts
Tallinn, Estonia : Tallinn University of Technology., 72-72.
https://hdl.handle.net/21.15107/rcub_vinar_12674

Đorđević T, Radović I, Borka D, Mišković ZL. Probing the plasmon-phonon hybridization in supported graphene by externally moving charged particles. in 17th Baltic Polymer Symposium : Book of Abstracts. 2017;:72-72.
https://hdl.handle.net/21.15107/rcub_vinar_12674 .

Đorđević, Tijana, Radović, Ivan, Borka, Duško, Mišković, Zoran L., "Probing the plasmon-phonon hybridization in supported graphene by externally moving charged particles" in 17th Baltic Polymer Symposium : Book of Abstracts (2017):72-72,
https://hdl.handle.net/21.15107/rcub_vinar_12674 .

TY  - CONF
AU  - Radović, Ivan
AU  - Despoja, Vito
AU  - Mišković, Zoran L.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12703
AB  - Firstly, we present a theoretical modeling of the experimental electron energy loss (EEL) spectra of free-standing films consisting of N graphene layers in a scanning transmission electron microscope (STEM) [1]. We treat the multi-layer graphene (MLG) as layered electron gas with in-plane polarizability modeled by a two-dimensional (2D), two-fluid hydrodynamic (HD) model [2] for the inter-band transitions of ʌ DQGı electrons of single-layer graphene (SLG), and find good agreement (as shown in Fig. 1) with the experimental EEL spectra [3] for N<10 graphene layers. Secondly, we present a theoretical modeling of the experimental EEL spectroscopy (EELS) data for monolayer graphene supported by Pt(111), Ru(0001), and Ni(111) substrates [4], as well as for high-quality graphene grown on peeled-off epitaxial Cu(111) foils [5]. To reproduce the experimental loss function, we use the same version of the HD model for graphene’s ʌ DQG ı HOHFWURQV in conjunction with an empirical Drude-Lorentz model for metal substrate. Finally, we present an analytical modeling of the experimental EELS data for free-standing graphene obtained by STEM using an ab initio method and the 2D, two-fluid extended HD (eHD) model [6]. We use an optical approximation based on the conductivity of graphene given in the local, i.e., frequency-dependent form derived by these two methods and find very good agreement with the EEL spectra from three independent experiments [3,7,8], especially in the case of the eHD model
PB  - Paris : Pierre and Marie Curie University
C3  - Mini-workshop REST in Paris "Common problems and solutions in core and valence theoretical spectroscopies" : Abstract book
T1  - Theoretical modeling of experimental EELS data for free-standing and supported graphene
SP  - 6
EP  - 6
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12703
ER  - 

@conference{
author = "Radović, Ivan and Despoja, Vito and Mišković, Zoran L.",
year = "2017",
abstract = "Firstly, we present a theoretical modeling of the experimental electron energy loss (EEL) spectra of free-standing films consisting of N graphene layers in a scanning transmission electron microscope (STEM) [1]. We treat the multi-layer graphene (MLG) as layered electron gas with in-plane polarizability modeled by a two-dimensional (2D), two-fluid hydrodynamic (HD) model [2] for the inter-band transitions of ʌ DQGı electrons of single-layer graphene (SLG), and find good agreement (as shown in Fig. 1) with the experimental EEL spectra [3] for N<10 graphene layers. Secondly, we present a theoretical modeling of the experimental EEL spectroscopy (EELS) data for monolayer graphene supported by Pt(111), Ru(0001), and Ni(111) substrates [4], as well as for high-quality graphene grown on peeled-off epitaxial Cu(111) foils [5]. To reproduce the experimental loss function, we use the same version of the HD model for graphene’s ʌ DQG ı HOHFWURQV in conjunction with an empirical Drude-Lorentz model for metal substrate. Finally, we present an analytical modeling of the experimental EELS data for free-standing graphene obtained by STEM using an ab initio method and the 2D, two-fluid extended HD (eHD) model [6]. We use an optical approximation based on the conductivity of graphene given in the local, i.e., frequency-dependent form derived by these two methods and find very good agreement with the EEL spectra from three independent experiments [3,7,8], especially in the case of the eHD model",
publisher = "Paris : Pierre and Marie Curie University",
journal = "Mini-workshop REST in Paris "Common problems and solutions in core and valence theoretical spectroscopies" : Abstract book",
title = "Theoretical modeling of experimental EELS data for free-standing and supported graphene",
pages = "6-6",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12703"
}

Radović, I., Despoja, V.,& Mišković, Z. L.. (2017). Theoretical modeling of experimental EELS data for free-standing and supported graphene. in Mini-workshop REST in Paris "Common problems and solutions in core and valence theoretical spectroscopies" : Abstract book
Paris : Pierre and Marie Curie University., 6-6.
https://hdl.handle.net/21.15107/rcub_vinar_12703

Radović I, Despoja V, Mišković ZL. Theoretical modeling of experimental EELS data for free-standing and supported graphene. in Mini-workshop REST in Paris "Common problems and solutions in core and valence theoretical spectroscopies" : Abstract book. 2017;:6-6.
https://hdl.handle.net/21.15107/rcub_vinar_12703 .

Radović, Ivan, Despoja, Vito, Mišković, Zoran L., "Theoretical modeling of experimental EELS data for free-standing and supported graphene" in Mini-workshop REST in Paris "Common problems and solutions in core and valence theoretical spectroscopies" : Abstract book (2017):6-6,
https://hdl.handle.net/21.15107/rcub_vinar_12703 .

TY  - CONF
AU  - Marinković, Tijana
AU  - Radović, Ivan
AU  - Borka, Duško
AU  - Mišković, Zoran L.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12678
AB  - We study the effects of variation in the doping density of graphene on hybridization taking place between its Dirac plasmon and the surface optical phonon modes in a SiO2 substrate, and show that this hybridization may be probed by a point charge that moves over graphene at a speed comparable to graphene’s Fermi speed. Using the dielectric-response formalism within the random phase approximation, we show that the plasmon-phonon hybridization exerts strong effects on the wake pattern in the induced potential in the plane of graphene, as well as on the stopping and image forces on the incident charge, in a manner that may be controlled by changing the doping density of graphene.
C3  - SFKM : 19. Simpozijum fizike kondenzovane materije = SCMP : the 19th Symposium on condensed matter physics : Book of abstracts
T1  - Probing the plasmon-phonon hybridization in supported graphene by externally moving charged particles
SP  - 91
EP  - 91
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12678
ER  - 

@conference{
author = "Marinković, Tijana and Radović, Ivan and Borka, Duško and Mišković, Zoran L.",
year = "2015",
abstract = "We study the effects of variation in the doping density of graphene on hybridization taking place between its Dirac plasmon and the surface optical phonon modes in a SiO2 substrate, and show that this hybridization may be probed by a point charge that moves over graphene at a speed comparable to graphene’s Fermi speed. Using the dielectric-response formalism within the random phase approximation, we show that the plasmon-phonon hybridization exerts strong effects on the wake pattern in the induced potential in the plane of graphene, as well as on the stopping and image forces on the incident charge, in a manner that may be controlled by changing the doping density of graphene.",
journal = "SFKM : 19. Simpozijum fizike kondenzovane materije = SCMP : the 19th Symposium on condensed matter physics : Book of abstracts",
title = "Probing the plasmon-phonon hybridization in supported graphene by externally moving charged particles",
pages = "91-91",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12678"
}

Marinković, T., Radović, I., Borka, D.,& Mišković, Z. L.. (2015). Probing the plasmon-phonon hybridization in supported graphene by externally moving charged particles. in SFKM : 19. Simpozijum fizike kondenzovane materije = SCMP : the 19th Symposium on condensed matter physics : Book of abstracts, 91-91.
https://hdl.handle.net/21.15107/rcub_vinar_12678

Marinković T, Radović I, Borka D, Mišković ZL. Probing the plasmon-phonon hybridization in supported graphene by externally moving charged particles. in SFKM : 19. Simpozijum fizike kondenzovane materije = SCMP : the 19th Symposium on condensed matter physics : Book of abstracts. 2015;:91-91.
https://hdl.handle.net/21.15107/rcub_vinar_12678 .

Marinković, Tijana, Radović, Ivan, Borka, Duško, Mišković, Zoran L., "Probing the plasmon-phonon hybridization in supported graphene by externally moving charged particles" in SFKM : 19. Simpozijum fizike kondenzovane materije = SCMP : the 19th Symposium on condensed matter physics : Book of abstracts (2015):91-91,
https://hdl.handle.net/21.15107/rcub_vinar_12678 .

TY  - CONF
AU  - Radović, Ivan
AU  - Borka, Duško
AU  - Mišković, Zoran L.
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12677
PB  - Beograd : Društvo fizičara Srbije
C3  - XII Kongres fizičara Srbije : Zbornik radova
T1  - Energijski gubitak naelektrisane čestice koja se kreće iznad površine grafena
SP  - 308
EP  - 311
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12677
ER  - 

@conference{
author = "Radović, Ivan and Borka, Duško and Mišković, Zoran L.",
year = "2013",
publisher = "Beograd : Društvo fizičara Srbije",
journal = "XII Kongres fizičara Srbije : Zbornik radova",
title = "Energijski gubitak naelektrisane čestice koja se kreće iznad površine grafena",
pages = "308-311",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12677"
}

Radović, I., Borka, D.,& Mišković, Z. L.. (2013). Energijski gubitak naelektrisane čestice koja se kreće iznad površine grafena. in XII Kongres fizičara Srbije : Zbornik radova
Beograd : Društvo fizičara Srbije., 308-311.
https://hdl.handle.net/21.15107/rcub_vinar_12677

Radović I, Borka D, Mišković ZL. Energijski gubitak naelektrisane čestice koja se kreće iznad površine grafena. in XII Kongres fizičara Srbije : Zbornik radova. 2013;:308-311.
https://hdl.handle.net/21.15107/rcub_vinar_12677 .

Radović, Ivan, Borka, Duško, Mišković, Zoran L., "Energijski gubitak naelektrisane čestice koja se kreće iznad površine grafena" in XII Kongres fizičara Srbije : Zbornik radova (2013):308-311,
https://hdl.handle.net/21.15107/rcub_vinar_12677 .

TY  - CONF
AU  - Radović, Ivan
AU  - Hadžievski, Ljupčo
AU  - Bibić, Nataša
AU  - Mišković, Zoran L.
PY  - 2007
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12673
AB  - We investigate the interactions of fast ions with graphene, describing the excitations of the electron gas in graphene by a two-dimensional hydrodynamic model. By linearizing the hydrodynamic equations, we derive general expressions for the induced potential, the stopping force and the image force for an ion moving parallel to the graphene sheet. Moreover, the Barkas effect on the stopping force and the analogous corrections to the induced potential and the image force are evaluated within the second-order perturbation approach to the hydrodynamic equations. The numerical results of the linear and nonlinear theories are obtained showing the influence of the ion position and its velocity on the stopping force and the image force.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - YUCOMAT 2007 : 9th Annual Conference YUCOMAT 2007 : Programme and the book of abstracts
T1  - Energy loss and deflection of fast ions moving parallel to the graphene sheet
SP  - 115
EP  - 115
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12673
ER  - 

@conference{
author = "Radović, Ivan and Hadžievski, Ljupčo and Bibić, Nataša and Mišković, Zoran L.",
year = "2007",
abstract = "We investigate the interactions of fast ions with graphene, describing the excitations of the electron gas in graphene by a two-dimensional hydrodynamic model. By linearizing the hydrodynamic equations, we derive general expressions for the induced potential, the stopping force and the image force for an ion moving parallel to the graphene sheet. Moreover, the Barkas effect on the stopping force and the analogous corrections to the induced potential and the image force are evaluated within the second-order perturbation approach to the hydrodynamic equations. The numerical results of the linear and nonlinear theories are obtained showing the influence of the ion position and its velocity on the stopping force and the image force.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "YUCOMAT 2007 : 9th Annual Conference YUCOMAT 2007 : Programme and the book of abstracts",
title = "Energy loss and deflection of fast ions moving parallel to the graphene sheet",
pages = "115-115",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12673"
}

Radović, I., Hadžievski, L., Bibić, N.,& Mišković, Z. L.. (2007). Energy loss and deflection of fast ions moving parallel to the graphene sheet. in YUCOMAT 2007 : 9th Annual Conference YUCOMAT 2007 : Programme and the book of abstracts
Belgrade : Institute of Technical Sciences of SASA., 115-115.
https://hdl.handle.net/21.15107/rcub_vinar_12673

Radović I, Hadžievski L, Bibić N, Mišković ZL. Energy loss and deflection of fast ions moving parallel to the graphene sheet. in YUCOMAT 2007 : 9th Annual Conference YUCOMAT 2007 : Programme and the book of abstracts. 2007;:115-115.
https://hdl.handle.net/21.15107/rcub_vinar_12673 .

Radović, Ivan, Hadžievski, Ljupčo, Bibić, Nataša, Mišković, Zoran L., "Energy loss and deflection of fast ions moving parallel to the graphene sheet" in YUCOMAT 2007 : 9th Annual Conference YUCOMAT 2007 : Programme and the book of abstracts (2007):115-115,
https://hdl.handle.net/21.15107/rcub_vinar_12673 .