TY  - CONF
AU  - Radović, Ivan
AU  - Despoja, Vito
AU  - Karbunar, Lazar
AU  - Mišković, Zoran
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12707
AB  - We study the wake effect induced by an external charged particle which moves above various sy1-Al2O3-sy2 composites, where syi (i=1,2) may be vacuum, pristine (undoped) or doped graphene. The polarization functions of graphene sheets are obtained using two approaches within the random phase approximation [1]: an ab initio method and a method based on the massless Dirac fermion approximation. The dynamic response of the layer of Al2O3 (sapphire) is described by a dielectric function consisting of several Lorentzian terms [1]. We evaluate the total electrostatic potential in the plane of the upper graphene sheet (the wake potential). It is shown that in the low velocity limit (below a velocity threshold for the wake given by the Fermi speed of graphene) the charged particle excites only the transverse optical (TO) phonons in the Al2O3 slab and only those phonons contribute to the wake potential. It is also shown that the wake potential is only sensitive on the upper system sy2 such that if sy2 is vacuum then TO phonons give intensive oscillations which are strongly reduced if sy2 is graphene.
C3  - COST Action CA15107 meeting : Multicomp Multi-Functional Nano-Carbon Composite Materials Network : Aveiro Spring Meeting : Book of abstracts
T1  - Wake potential in a graphene-sapphire-graphene structure
SP  - 79
EP  - 79
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12707
ER  - 

@conference{
author = "Radović, Ivan and Despoja, Vito and Karbunar, Lazar and Mišković, Zoran",
year = "2019",
abstract = "We study the wake effect induced by an external charged particle which moves above various sy1-Al2O3-sy2 composites, where syi (i=1,2) may be vacuum, pristine (undoped) or doped graphene. The polarization functions of graphene sheets are obtained using two approaches within the random phase approximation [1]: an ab initio method and a method based on the massless Dirac fermion approximation. The dynamic response of the layer of Al2O3 (sapphire) is described by a dielectric function consisting of several Lorentzian terms [1]. We evaluate the total electrostatic potential in the plane of the upper graphene sheet (the wake potential). It is shown that in the low velocity limit (below a velocity threshold for the wake given by the Fermi speed of graphene) the charged particle excites only the transverse optical (TO) phonons in the Al2O3 slab and only those phonons contribute to the wake potential. It is also shown that the wake potential is only sensitive on the upper system sy2 such that if sy2 is vacuum then TO phonons give intensive oscillations which are strongly reduced if sy2 is graphene.",
journal = "COST Action CA15107 meeting : Multicomp Multi-Functional Nano-Carbon Composite Materials Network : Aveiro Spring Meeting : Book of abstracts",
title = "Wake potential in a graphene-sapphire-graphene structure",
pages = "79-79",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12707"
}

Radović, I., Despoja, V., Karbunar, L.,& Mišković, Z.. (2019). Wake potential in a graphene-sapphire-graphene structure. in COST Action CA15107 meeting : Multicomp Multi-Functional Nano-Carbon Composite Materials Network : Aveiro Spring Meeting : Book of abstracts, 79-79.
https://hdl.handle.net/21.15107/rcub_vinar_12707

Radović I, Despoja V, Karbunar L, Mišković Z. Wake potential in a graphene-sapphire-graphene structure. in COST Action CA15107 meeting : Multicomp Multi-Functional Nano-Carbon Composite Materials Network : Aveiro Spring Meeting : Book of abstracts. 2019;:79-79.
https://hdl.handle.net/21.15107/rcub_vinar_12707 .

Radović, Ivan, Despoja, Vito, Karbunar, Lazar, Mišković, Zoran, "Wake potential in a graphene-sapphire-graphene structure" in COST Action CA15107 meeting : Multicomp Multi-Functional Nano-Carbon Composite Materials Network : Aveiro Spring Meeting : Book of abstracts (2019):79-79,
https://hdl.handle.net/21.15107/rcub_vinar_12707 .

TY  - CONF
AU  - Despoja, Vito
AU  - Radović, Ivan
AU  - Karbunar, Lazar
AU  - Mišković, Zoran
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12665
AB  - We study the wake effect due to excitation of a plasmon-phonon hybrid mode in a sandwich-like structure consisting of two doped graphene sheets, separated by a layer of Al2O3 (sapphire), which is induced by an external charged particle moving parallel to the structure.
PB  - University of Belgrade : Faculty of Physics
C3  - SPIG 2018 : 29th Summer School and International Symposium on the Physics of Ionized Gases : Contributed papers & abstracts of invited lectures, topical invited lectures, progress reports and workshop lectures
T1  - Wake effect due to excitation of plasmon-phonon hybrid modes in a graphene-sapphire-graphene structure by a moving charge
SP  - 82
EP  - 85
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12665
ER  - 

@conference{
author = "Despoja, Vito and Radović, Ivan and Karbunar, Lazar and Mišković, Zoran",
year = "2018",
abstract = "We study the wake effect due to excitation of a plasmon-phonon hybrid mode in a sandwich-like structure consisting of two doped graphene sheets, separated by a layer of Al2O3 (sapphire), which is induced by an external charged particle moving parallel to the structure.",
publisher = "University of Belgrade : Faculty of Physics",
journal = "SPIG 2018 : 29th Summer School and International Symposium on the Physics of Ionized Gases : Contributed papers & abstracts of invited lectures, topical invited lectures, progress reports and workshop lectures",
title = "Wake effect due to excitation of plasmon-phonon hybrid modes in a graphene-sapphire-graphene structure by a moving charge",
pages = "82-85",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12665"
}

Despoja, V., Radović, I., Karbunar, L.,& Mišković, Z.. (2018). Wake effect due to excitation of plasmon-phonon hybrid modes in a graphene-sapphire-graphene structure by a moving charge. in SPIG 2018 : 29th Summer School and International Symposium on the Physics of Ionized Gases : Contributed papers & abstracts of invited lectures, topical invited lectures, progress reports and workshop lectures
University of Belgrade : Faculty of Physics., 82-85.
https://hdl.handle.net/21.15107/rcub_vinar_12665

Despoja V, Radović I, Karbunar L, Mišković Z. Wake effect due to excitation of plasmon-phonon hybrid modes in a graphene-sapphire-graphene structure by a moving charge. in SPIG 2018 : 29th Summer School and International Symposium on the Physics of Ionized Gases : Contributed papers & abstracts of invited lectures, topical invited lectures, progress reports and workshop lectures. 2018;:82-85.
https://hdl.handle.net/21.15107/rcub_vinar_12665 .

Despoja, Vito, Radović, Ivan, Karbunar, Lazar, Mišković, Zoran, "Wake effect due to excitation of plasmon-phonon hybrid modes in a graphene-sapphire-graphene structure by a moving charge" in SPIG 2018 : 29th Summer School and International Symposium on the Physics of Ionized Gases : Contributed papers & abstracts of invited lectures, topical invited lectures, progress reports and workshop lectures (2018):82-85,
https://hdl.handle.net/21.15107/rcub_vinar_12665 .

TY  - CONF
AU  - Radović, Ivan
AU  - Despoja, Vito
AU  - Karbunar, Lazar
AU  - Mišković, Zoran
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12706
AB  - We study the wake effect due to excitation of a plasmon-phonon hybrid mode in a sandwich-like structure consisting of two doped graphene sheets, separated by a layer of Al2O3 (sapphire), which is induced by an external charged particle moving parallel to the structure. The response function of each graphene is obtained using two approaches within the random phase approximation: an ab initio method that includes all electronic bands in graphene and a computationally less demanding method based on the massless Dirac fermion (MDF) approximation for the low-energy excitations of electrons in the π bands. The response of the sapphire layer is described by a dielectric function consisting of several Lorentzian terms. We evaluate the total electrostatic potential in the plane of the upper graphene sheet for a particle moving at the sub-threshold speed for the wake effect in a single, free graphene. We show that, when the space between graphene sheets is air, there is only a sharp, somewhat asymmetric peak in the potential at the position of the particle. On the other hand, when the space is filled with sapphire, there is a prominent wake pattern in the potential behind the particle resulting from a low-frequency plasmon-phonon mode. It can be noted that the analytical MDF model reproduces the overall shape and the period of quasi-oscillations in the wake potential obtained from the ab initio calculations.
C3  - Bucharest CA 15107 Fall Meeting : Multi-Functional Nano-Carbon Composite Materials : Programme and Abstract Book
T1  - Wake effect in the interaction of an external charged particle with a graphene-sapphire-graphene structure due to excitation of plasmon-phonon hybrid modes
SP  - 59
EP  - 59
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12706
ER  - 

@conference{
author = "Radović, Ivan and Despoja, Vito and Karbunar, Lazar and Mišković, Zoran",
year = "2018",
abstract = "We study the wake effect due to excitation of a plasmon-phonon hybrid mode in a sandwich-like structure consisting of two doped graphene sheets, separated by a layer of Al2O3 (sapphire), which is induced by an external charged particle moving parallel to the structure. The response function of each graphene is obtained using two approaches within the random phase approximation: an ab initio method that includes all electronic bands in graphene and a computationally less demanding method based on the massless Dirac fermion (MDF) approximation for the low-energy excitations of electrons in the π bands. The response of the sapphire layer is described by a dielectric function consisting of several Lorentzian terms. We evaluate the total electrostatic potential in the plane of the upper graphene sheet for a particle moving at the sub-threshold speed for the wake effect in a single, free graphene. We show that, when the space between graphene sheets is air, there is only a sharp, somewhat asymmetric peak in the potential at the position of the particle. On the other hand, when the space is filled with sapphire, there is a prominent wake pattern in the potential behind the particle resulting from a low-frequency plasmon-phonon mode. It can be noted that the analytical MDF model reproduces the overall shape and the period of quasi-oscillations in the wake potential obtained from the ab initio calculations.",
journal = "Bucharest CA 15107 Fall Meeting : Multi-Functional Nano-Carbon Composite Materials : Programme and Abstract Book",
title = "Wake effect in the interaction of an external charged particle with a graphene-sapphire-graphene structure due to excitation of plasmon-phonon hybrid modes",
pages = "59-59",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12706"
}

Radović, I., Despoja, V., Karbunar, L.,& Mišković, Z.. (2018). Wake effect in the interaction of an external charged particle with a graphene-sapphire-graphene structure due to excitation of plasmon-phonon hybrid modes. in Bucharest CA 15107 Fall Meeting : Multi-Functional Nano-Carbon Composite Materials : Programme and Abstract Book, 59-59.
https://hdl.handle.net/21.15107/rcub_vinar_12706

Radović I, Despoja V, Karbunar L, Mišković Z. Wake effect in the interaction of an external charged particle with a graphene-sapphire-graphene structure due to excitation of plasmon-phonon hybrid modes. in Bucharest CA 15107 Fall Meeting : Multi-Functional Nano-Carbon Composite Materials : Programme and Abstract Book. 2018;:59-59.
https://hdl.handle.net/21.15107/rcub_vinar_12706 .

Radović, Ivan, Despoja, Vito, Karbunar, Lazar, Mišković, Zoran, "Wake effect in the interaction of an external charged particle with a graphene-sapphire-graphene structure due to excitation of plasmon-phonon hybrid modes" in Bucharest CA 15107 Fall Meeting : Multi-Functional Nano-Carbon Composite Materials : Programme and Abstract Book (2018):59-59,
https://hdl.handle.net/21.15107/rcub_vinar_12706 .

TY  - CONF
AU  - Karbunar, Lazar
AU  - Despoja, Vito
AU  - Radović, Ivan
AU  - Mišković, Zoran
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12644
AB  - We present a method to introduce several graphene sheets into the non-retarded Green’s function for a layered structure containing polar insulators, which support transverse optical phonon modes. Dispersion relations are derived to illustrate hybridization of Dirac plasmons in two graphene sheets with phonon modes in an oxide spacer layer between them.
PB  - University of Belgrade : Faculty of Physics
C3  - SPIG 2016 : 28th Summer School and International Symposium on the Physics of Ionized Gases : Contributed papers & abstracts of invited lectures, topical invited lectures, progress reports and workshop lectures
T1  - Plasmon-phonon hybridization in layered structures including graphene
SP  - 154
EP  - 157
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12644
ER  - 

@conference{
author = "Karbunar, Lazar and Despoja, Vito and Radović, Ivan and Mišković, Zoran",
year = "2016",
abstract = "We present a method to introduce several graphene sheets into the non-retarded Green’s function for a layered structure containing polar insulators, which support transverse optical phonon modes. Dispersion relations are derived to illustrate hybridization of Dirac plasmons in two graphene sheets with phonon modes in an oxide spacer layer between them.",
publisher = "University of Belgrade : Faculty of Physics",
journal = "SPIG 2016 : 28th Summer School and International Symposium on the Physics of Ionized Gases : Contributed papers & abstracts of invited lectures, topical invited lectures, progress reports and workshop lectures",
title = "Plasmon-phonon hybridization in layered structures including graphene",
pages = "154-157",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12644"
}

Karbunar, L., Despoja, V., Radović, I.,& Mišković, Z.. (2016). Plasmon-phonon hybridization in layered structures including graphene. in SPIG 2016 : 28th Summer School and International Symposium on the Physics of Ionized Gases : Contributed papers & abstracts of invited lectures, topical invited lectures, progress reports and workshop lectures
University of Belgrade : Faculty of Physics., 154-157.
https://hdl.handle.net/21.15107/rcub_vinar_12644

Karbunar L, Despoja V, Radović I, Mišković Z. Plasmon-phonon hybridization in layered structures including graphene. in SPIG 2016 : 28th Summer School and International Symposium on the Physics of Ionized Gases : Contributed papers & abstracts of invited lectures, topical invited lectures, progress reports and workshop lectures. 2016;:154-157.
https://hdl.handle.net/21.15107/rcub_vinar_12644 .

Karbunar, Lazar, Despoja, Vito, Radović, Ivan, Mišković, Zoran, "Plasmon-phonon hybridization in layered structures including graphene" in SPIG 2016 : 28th Summer School and International Symposium on the Physics of Ionized Gases : Contributed papers & abstracts of invited lectures, topical invited lectures, progress reports and workshop lectures (2016):154-157,
https://hdl.handle.net/21.15107/rcub_vinar_12644 .

TY  - CONF
AU  - Despoja, Vito
AU  - Radović, Ivan
AU  - Mišković, Zoran
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12646
AB  - Nowadays we are witnesses of a development of one promising branch of applied physics, called plasmonics. Especially interesting issue is plasmonics in quasi-two-dimensional (q2D) crystals deposited on various dielectric substrates. Here arise the main questions: how to increase the 2D plasmon propagation length and how to excite 2D plasmon most efficiently. We will focus on describing the interaction between electronic excitations in two graphene layers with phonons in aluminium oxide (Al2O3) slab on which the graphene layers are deposited. Special attention will be paid to explain the hybridization between 2D plasmons and surface (TO) phonons. Because of multiple intersections of 2D plasmons and TO phonons the 2D plasmon moves to lower energies which allows it to be excited by charged particles moving at subthreshold speeds, 􀝒 􀵏 􀝒􀮿 [1]. We will present the results for wake potential induced by a charged particle which moves parallel to the graphene/dielectric interface. It will be shown how various substrates modify the efficiency of particle/plasmon coupling. The electronic excitations in graphene are obtained by using plane waveab initio approach where we have addressed the problem of calculation of EELS spectra in the optical limit (􀜳 → 0) and how to avoid intersupercell Coulomb interaction [2].
PB  - University of Belgrade : Faculty of Physics
C3  - SPIG 2016 : 28th Summer School and International Symposium on the Physics of Ionized Gases : Contributed papers & abstracts of invited lectures, topical invited lectures, progress reports and workshop lectures
T1  - Interactions of charged particles with double-layer graphene
SP  - 137
EP  - 137
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12646
ER  - 

@conference{
author = "Despoja, Vito and Radović, Ivan and Mišković, Zoran",
year = "2016",
abstract = "Nowadays we are witnesses of a development of one promising branch of applied physics, called plasmonics. Especially interesting issue is plasmonics in quasi-two-dimensional (q2D) crystals deposited on various dielectric substrates. Here arise the main questions: how to increase the 2D plasmon propagation length and how to excite 2D plasmon most efficiently. We will focus on describing the interaction between electronic excitations in two graphene layers with phonons in aluminium oxide (Al2O3) slab on which the graphene layers are deposited. Special attention will be paid to explain the hybridization between 2D plasmons and surface (TO) phonons. Because of multiple intersections of 2D plasmons and TO phonons the 2D plasmon moves to lower energies which allows it to be excited by charged particles moving at subthreshold speeds, 􀝒 􀵏 􀝒􀮿 [1]. We will present the results for wake potential induced by a charged particle which moves parallel to the graphene/dielectric interface. It will be shown how various substrates modify the efficiency of particle/plasmon coupling. The electronic excitations in graphene are obtained by using plane waveab initio approach where we have addressed the problem of calculation of EELS spectra in the optical limit (􀜳 → 0) and how to avoid intersupercell Coulomb interaction [2].",
publisher = "University of Belgrade : Faculty of Physics",
journal = "SPIG 2016 : 28th Summer School and International Symposium on the Physics of Ionized Gases : Contributed papers & abstracts of invited lectures, topical invited lectures, progress reports and workshop lectures",
title = "Interactions of charged particles with double-layer graphene",
pages = "137-137",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12646"
}

Despoja, V., Radović, I.,& Mišković, Z.. (2016). Interactions of charged particles with double-layer graphene. in SPIG 2016 : 28th Summer School and International Symposium on the Physics of Ionized Gases : Contributed papers & abstracts of invited lectures, topical invited lectures, progress reports and workshop lectures
University of Belgrade : Faculty of Physics., 137-137.
https://hdl.handle.net/21.15107/rcub_vinar_12646

Despoja V, Radović I, Mišković Z. Interactions of charged particles with double-layer graphene. in SPIG 2016 : 28th Summer School and International Symposium on the Physics of Ionized Gases : Contributed papers & abstracts of invited lectures, topical invited lectures, progress reports and workshop lectures. 2016;:137-137.
https://hdl.handle.net/21.15107/rcub_vinar_12646 .

Despoja, Vito, Radović, Ivan, Mišković, Zoran, "Interactions of charged particles with double-layer graphene" in SPIG 2016 : 28th Summer School and International Symposium on the Physics of Ionized Gases : Contributed papers & abstracts of invited lectures, topical invited lectures, progress reports and workshop lectures (2016):137-137,
https://hdl.handle.net/21.15107/rcub_vinar_12646 .

TY  - CONF
AU  - Marinković, Tijana
AU  - Radović, Ivan
AU  - Borka, Duško
AU  - Mišković, Zoran
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12645
AB  - The inter-particle interaction energy and the total stopping power for a correlated motion of two point charges that move above supported graphene at a speed smaller than the graphene Fermi speed are theoretically investigated. The slowly moving charges excite lowfrequency collective mode which survives the Landau damping in the region of the intraband single particle excitations in doped graphene. We show that this mode gives rise to wake effect manifested in the oscillatory patterns in both the interaction energy and the stopping power when the charges move with their inter-particle axis pointing in the direction of motion.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - 13th Young Researchers' Conference Materials Sciences and Engineering : Program and the book of abstracts
T1  - Wake effect in the interaction of slow correlated charges with supported graphene due to plasmon-phonon hybridization
SP  - 19
EP  - 19
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12645
ER  - 

@conference{
author = "Marinković, Tijana and Radović, Ivan and Borka, Duško and Mišković, Zoran",
year = "2014",
abstract = "The inter-particle interaction energy and the total stopping power for a correlated motion of two point charges that move above supported graphene at a speed smaller than the graphene Fermi speed are theoretically investigated. The slowly moving charges excite lowfrequency collective mode which survives the Landau damping in the region of the intraband single particle excitations in doped graphene. We show that this mode gives rise to wake effect manifested in the oscillatory patterns in both the interaction energy and the stopping power when the charges move with their inter-particle axis pointing in the direction of motion.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "13th Young Researchers' Conference Materials Sciences and Engineering : Program and the book of abstracts",
title = "Wake effect in the interaction of slow correlated charges with supported graphene due to plasmon-phonon hybridization",
pages = "19-19",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12645"
}

Marinković, T., Radović, I., Borka, D.,& Mišković, Z.. (2014). Wake effect in the interaction of slow correlated charges with supported graphene due to plasmon-phonon hybridization. in 13th Young Researchers' Conference Materials Sciences and Engineering : Program and the book of abstracts
Belgrade : Institute of Technical Sciences of SASA., 19-19.
https://hdl.handle.net/21.15107/rcub_vinar_12645

Marinković T, Radović I, Borka D, Mišković Z. Wake effect in the interaction of slow correlated charges with supported graphene due to plasmon-phonon hybridization. in 13th Young Researchers' Conference Materials Sciences and Engineering : Program and the book of abstracts. 2014;:19-19.
https://hdl.handle.net/21.15107/rcub_vinar_12645 .

Marinković, Tijana, Radović, Ivan, Borka, Duško, Mišković, Zoran, "Wake effect in the interaction of slow correlated charges with supported graphene due to plasmon-phonon hybridization" in 13th Young Researchers' Conference Materials Sciences and Engineering : Program and the book of abstracts (2014):19-19,
https://hdl.handle.net/21.15107/rcub_vinar_12645 .

TY  - CONF
AU  - Radović, Ivan
AU  - Borka, Duško
AU  - Mišković, Zoran
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12705
PB  - University of Belgrade : Faculty of Physics
C3  - 26th Summer School and International Symposium on the Physics of Ionized Gases : Proceedings
T1  - Energy loss of charged particles moving over multilayer graphene
SP  - 87
EP  - 90
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12705
ER  - 

@conference{
author = "Radović, Ivan and Borka, Duško and Mišković, Zoran",
year = "2012",
publisher = "University of Belgrade : Faculty of Physics",
journal = "26th Summer School and International Symposium on the Physics of Ionized Gases : Proceedings",
title = "Energy loss of charged particles moving over multilayer graphene",
pages = "87-90",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12705"
}

Radović, I., Borka, D.,& Mišković, Z.. (2012). Energy loss of charged particles moving over multilayer graphene. in 26th Summer School and International Symposium on the Physics of Ionized Gases : Proceedings
University of Belgrade : Faculty of Physics., 87-90.
https://hdl.handle.net/21.15107/rcub_vinar_12705

Radović I, Borka D, Mišković Z. Energy loss of charged particles moving over multilayer graphene. in 26th Summer School and International Symposium on the Physics of Ionized Gases : Proceedings. 2012;:87-90.
https://hdl.handle.net/21.15107/rcub_vinar_12705 .

Radović, Ivan, Borka, Duško, Mišković, Zoran, "Energy loss of charged particles moving over multilayer graphene" in 26th Summer School and International Symposium on the Physics of Ionized Gases : Proceedings (2012):87-90,
https://hdl.handle.net/21.15107/rcub_vinar_12705 .

TY  - JOUR
AU  - Borka, Duško
AU  - Radović, Ivan
AU  - Mišković, Zoran L.
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6927
AB  - We calculate the stopping and image forces on a point charge moving over a single-layer graphene grown on an SiC substrate, and compare them with forces arising when a charge moves over a two-dimensional electron gas (2DEG) in an Ag monolayer on a Si substrate. Given that both these systems constitute a one-atom thick 2DEG, major differences are found in the velocity and distance dependencies of the two forces owing to different electronic structures of the respective 2DEG. Within the massless Dirac fermion picture of graphenes pi electron bands, the inter-band single particle excitations are found to affect the stopping and image forces at high speeds in a substantial way, whereas such excitations are absent in the 2DEG of the metallic layer described by a single parabolic band. (C) 2010 Elsevier B.V. All rights reserved.
T2  - Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms
T1  - Dynamic polarization of graphene by moving external charges: Comparison with 2D electron gas
VL  - 269
IS  - 11
SP  - 1225
EP  - 1228
DO  - 10.1016/j.nimb.2010.10.021
ER  - 

@article{
author = "Borka, Duško and Radović, Ivan and Mišković, Zoran L.",
year = "2011",
abstract = "We calculate the stopping and image forces on a point charge moving over a single-layer graphene grown on an SiC substrate, and compare them with forces arising when a charge moves over a two-dimensional electron gas (2DEG) in an Ag monolayer on a Si substrate. Given that both these systems constitute a one-atom thick 2DEG, major differences are found in the velocity and distance dependencies of the two forces owing to different electronic structures of the respective 2DEG. Within the massless Dirac fermion picture of graphenes pi electron bands, the inter-band single particle excitations are found to affect the stopping and image forces at high speeds in a substantial way, whereas such excitations are absent in the 2DEG of the metallic layer described by a single parabolic band. (C) 2010 Elsevier B.V. All rights reserved.",
journal = "Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms",
title = "Dynamic polarization of graphene by moving external charges: Comparison with 2D electron gas",
volume = "269",
number = "11",
pages = "1225-1228",
doi = "10.1016/j.nimb.2010.10.021"
}

Borka, D., Radović, I.,& Mišković, Z. L.. (2011). Dynamic polarization of graphene by moving external charges: Comparison with 2D electron gas. in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 269(11), 1225-1228.
https://doi.org/10.1016/j.nimb.2010.10.021

Borka D, Radović I, Mišković ZL. Dynamic polarization of graphene by moving external charges: Comparison with 2D electron gas. in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms. 2011;269(11):1225-1228.
doi:10.1016/j.nimb.2010.10.021 .

Borka, Duško, Radović, Ivan, Mišković, Zoran L., "Dynamic polarization of graphene by moving external charges: Comparison with 2D electron gas" in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 269, no. 11 (2011):1225-1228,
https://doi.org/10.1016/j.nimb.2010.10.021 . .