TY  - JOUR
AU  - Radović, Ivan
AU  - Song, Yuan-Hong
AU  - Zhang, Ying-Ying
AU  - Borka, Duško
AU  - Mišković, Zoran L.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1518
AB  - We use the dielectric response formalism to explore the wake effect due to excitation of the sheet plasmons in graphene and in a two-dimensional (2D) electron gas with a parabolic energy band, caused by an externally moving charged particle. Using the random phase approximation to obtain the relevant polarisation functions, we have found similarities as well as some differences in the V-shaped wake patterns that result from different structures of the single-particle excitation spectra in those two electron systems. While both systems exhibit a velocity threshold for the charged particle to be able to excite a wake, graphene shows some irregularities in the wake oscillations behind that particle, whereas the 2D electron gas exhibits a larger opening angle of its V-shaped wake.
T2  - Radiation Effects and Defects in Solids
T1  - Excitation of plasmon wakes in two-dimensional electron systems by moving external charged particles
VL  - 172
IS  - 1-2
SP  - 90
EP  - 99
DO  - 10.1080/10420150.2017.1286661
ER  - 

@article{
author = "Radović, Ivan and Song, Yuan-Hong and Zhang, Ying-Ying and Borka, Duško and Mišković, Zoran L.",
year = "2017",
abstract = "We use the dielectric response formalism to explore the wake effect due to excitation of the sheet plasmons in graphene and in a two-dimensional (2D) electron gas with a parabolic energy band, caused by an externally moving charged particle. Using the random phase approximation to obtain the relevant polarisation functions, we have found similarities as well as some differences in the V-shaped wake patterns that result from different structures of the single-particle excitation spectra in those two electron systems. While both systems exhibit a velocity threshold for the charged particle to be able to excite a wake, graphene shows some irregularities in the wake oscillations behind that particle, whereas the 2D electron gas exhibits a larger opening angle of its V-shaped wake.",
journal = "Radiation Effects and Defects in Solids",
title = "Excitation of plasmon wakes in two-dimensional electron systems by moving external charged particles",
volume = "172",
number = "1-2",
pages = "90-99",
doi = "10.1080/10420150.2017.1286661"
}

Radović, I., Song, Y., Zhang, Y., Borka, D.,& Mišković, Z. L.. (2017). Excitation of plasmon wakes in two-dimensional electron systems by moving external charged particles. in Radiation Effects and Defects in Solids, 172(1-2), 90-99.
https://doi.org/10.1080/10420150.2017.1286661

Radović I, Song Y, Zhang Y, Borka D, Mišković ZL. Excitation of plasmon wakes in two-dimensional electron systems by moving external charged particles. in Radiation Effects and Defects in Solids. 2017;172(1-2):90-99.
doi:10.1080/10420150.2017.1286661 .

Radović, Ivan, Song, Yuan-Hong, Zhang, Ying-Ying, Borka, Duško, Mišković, Zoran L., "Excitation of plasmon wakes in two-dimensional electron systems by moving external charged particles" in Radiation Effects and Defects in Solids, 172, no. 1-2 (2017):90-99,
https://doi.org/10.1080/10420150.2017.1286661 . .

TY  - JOUR
AU  - Politano, Antonio
AU  - Radović, Ivan
AU  - Borka, Duško
AU  - Mišković, Zoran L.
AU  - Yu, H. K.
AU  - Farias, D.
AU  - Chiarello, G.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1414
AB  - By means of angle-resolved electron energy loss spectroscopy, we have measured the interband it plasmon in high-quality graphene grown on peeled-off epitaxial Cu(111) foils. Experimental loss spectra have been reproduced by means of a hydrodynamic model. The dispersion relation of the plasmon frequency shows a nearly-flat dispersion up to a critical wave-vector of 0.3 angstrom(-1). We propose that the observed behavior could be originated by confinement effects in ripples in the strained graphene sheet. Strain also limits the dispersion at higher momenta, as a consequence of the increased effective mass of charge carriers. The analysis of momentum dependence of the line-width and of the inverse quality factor indicates that damping processes are dominated by decay in electron-hole pairs via indirect interband transitions. (C) 2016 Elsevier Ltd. All rights reserved.
T2  - Carbon
T1  - Dispersion and damping of the interband pi plasmon in graphene grown on Cu(111) foils
VL  - 114
SP  - 70
EP  - 76
DO  - 10.1016/j.carbon.2016.11.073
ER  - 

@article{
author = "Politano, Antonio and Radović, Ivan and Borka, Duško and Mišković, Zoran L. and Yu, H. K. and Farias, D. and Chiarello, G.",
year = "2017",
abstract = "By means of angle-resolved electron energy loss spectroscopy, we have measured the interband it plasmon in high-quality graphene grown on peeled-off epitaxial Cu(111) foils. Experimental loss spectra have been reproduced by means of a hydrodynamic model. The dispersion relation of the plasmon frequency shows a nearly-flat dispersion up to a critical wave-vector of 0.3 angstrom(-1). We propose that the observed behavior could be originated by confinement effects in ripples in the strained graphene sheet. Strain also limits the dispersion at higher momenta, as a consequence of the increased effective mass of charge carriers. The analysis of momentum dependence of the line-width and of the inverse quality factor indicates that damping processes are dominated by decay in electron-hole pairs via indirect interband transitions. (C) 2016 Elsevier Ltd. All rights reserved.",
journal = "Carbon",
title = "Dispersion and damping of the interband pi plasmon in graphene grown on Cu(111) foils",
volume = "114",
pages = "70-76",
doi = "10.1016/j.carbon.2016.11.073"
}

Politano, A., Radović, I., Borka, D., Mišković, Z. L., Yu, H. K., Farias, D.,& Chiarello, G.. (2017). Dispersion and damping of the interband pi plasmon in graphene grown on Cu(111) foils. in Carbon, 114, 70-76.
https://doi.org/10.1016/j.carbon.2016.11.073

Politano A, Radović I, Borka D, Mišković ZL, Yu HK, Farias D, Chiarello G. Dispersion and damping of the interband pi plasmon in graphene grown on Cu(111) foils. in Carbon. 2017;114:70-76.
doi:10.1016/j.carbon.2016.11.073 .

Politano, Antonio, Radović, Ivan, Borka, Duško, Mišković, Zoran L., Yu, H. K., Farias, D., Chiarello, G., "Dispersion and damping of the interband pi plasmon in graphene grown on Cu(111) foils" in Carbon, 114 (2017):70-76,
https://doi.org/10.1016/j.carbon.2016.11.073 . .

TY  - JOUR
AU  - Zhang, Ying-Ying
AU  - Song, Yuan-Hong
AU  - Radović, Ivan
AU  - Mišković, Zoran L.
AU  - Wang, You-Nian
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1706
AB  - We study plasmon excitations and channeling trajectories of charged particles in triple-walled carbon nanotubes (TWNTs) based on a semi-classical kinetic model combined with the Molecular Dynamics method. Numerical results show that the outer and inner tubes of a TWNT exert strong influence on the peak structures of the self-energy (or the image potential) and the stopping power curves for the channeling ion, resulting in one or two narrow peaks in the low speed region. In addition, the radial dependencies of the total potential, which includes the image potential due to dynamic polarization of the electron gas in nanotubes and a reactive empirical bond order potential for atomic interactions, are compared for single-walled carbon nanotubes (SWNTs), double-walled carbon nanotubes (DWNTs) and TWNTs. By comparing the ion channeling trajectories in those types of nanotubes, we conclude that the variation of the total energy of ions with their channeling distance along the nanotube axis is related to the types of channeling trajectories, exhibiting smooth helical shapes in TWNTs and a succession of sharp reflections off the wall in SWNTs and DWNTs.
T2  - European Physical Journal D. Atoms, Molecules, Clusters and Optical Physics
T1  - Interactions of moving charged particles with triple-walled carbon nanotubes
VL  - 71
IS  - 8
DO  - 10.1140/epjd/e2017-70744-3
ER  - 

@article{
author = "Zhang, Ying-Ying and Song, Yuan-Hong and Radović, Ivan and Mišković, Zoran L. and Wang, You-Nian",
year = "2017",
abstract = "We study plasmon excitations and channeling trajectories of charged particles in triple-walled carbon nanotubes (TWNTs) based on a semi-classical kinetic model combined with the Molecular Dynamics method. Numerical results show that the outer and inner tubes of a TWNT exert strong influence on the peak structures of the self-energy (or the image potential) and the stopping power curves for the channeling ion, resulting in one or two narrow peaks in the low speed region. In addition, the radial dependencies of the total potential, which includes the image potential due to dynamic polarization of the electron gas in nanotubes and a reactive empirical bond order potential for atomic interactions, are compared for single-walled carbon nanotubes (SWNTs), double-walled carbon nanotubes (DWNTs) and TWNTs. By comparing the ion channeling trajectories in those types of nanotubes, we conclude that the variation of the total energy of ions with their channeling distance along the nanotube axis is related to the types of channeling trajectories, exhibiting smooth helical shapes in TWNTs and a succession of sharp reflections off the wall in SWNTs and DWNTs.",
journal = "European Physical Journal D. Atoms, Molecules, Clusters and Optical Physics",
title = "Interactions of moving charged particles with triple-walled carbon nanotubes",
volume = "71",
number = "8",
doi = "10.1140/epjd/e2017-70744-3"
}

Zhang, Y., Song, Y., Radović, I., Mišković, Z. L.,& Wang, Y.. (2017). Interactions of moving charged particles with triple-walled carbon nanotubes. in European Physical Journal D. Atoms, Molecules, Clusters and Optical Physics, 71(8).
https://doi.org/10.1140/epjd/e2017-70744-3

Zhang Y, Song Y, Radović I, Mišković ZL, Wang Y. Interactions of moving charged particles with triple-walled carbon nanotubes. in European Physical Journal D. Atoms, Molecules, Clusters and Optical Physics. 2017;71(8).
doi:10.1140/epjd/e2017-70744-3 .

Zhang, Ying-Ying, Song, Yuan-Hong, Radović, Ivan, Mišković, Zoran L., Wang, You-Nian, "Interactions of moving charged particles with triple-walled carbon nanotubes" in European Physical Journal D. Atoms, Molecules, Clusters and Optical Physics, 71, no. 8 (2017),
https://doi.org/10.1140/epjd/e2017-70744-3 . .

TY  - JOUR
AU  - Marinković, Tijana
AU  - Radović, Ivan
AU  - Borka, Duško
AU  - Mišković, Zoran L.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/377
AB  - We study correlated motion of two ions resulting from a dissociative grazing scattering of a slow diatomic molecular ion on supported graphene. A low-frequency collective mode resulting from hybridization of graphenes Dirac plasmon and the optical phonon modes in the insulating substrate may be excited by matching its phase velocity with the ion speed lower than the graphene Fermi speed. The resulting wake effect gives rise to the strongly directional, oscillatory patterns in both the inter-particle interaction potential and the total stopping power for the two ions, which may be detectable in their angular and the energy loss spectra. (C) 2014 Elsevier B.V. All rights reserved.
T2  - Physics Letters A
T1  - Wake effect in the interaction of slow correlated charges with supported graphene due to plasmon-phonon hybridization
VL  - 379
IS  - 4
SP  - 377
EP  - 381
DO  - 10.1016/j.physleta.2014.11.044
ER  - 

@article{
author = "Marinković, Tijana and Radović, Ivan and Borka, Duško and Mišković, Zoran L.",
year = "2015",
abstract = "We study correlated motion of two ions resulting from a dissociative grazing scattering of a slow diatomic molecular ion on supported graphene. A low-frequency collective mode resulting from hybridization of graphenes Dirac plasmon and the optical phonon modes in the insulating substrate may be excited by matching its phase velocity with the ion speed lower than the graphene Fermi speed. The resulting wake effect gives rise to the strongly directional, oscillatory patterns in both the inter-particle interaction potential and the total stopping power for the two ions, which may be detectable in their angular and the energy loss spectra. (C) 2014 Elsevier B.V. All rights reserved.",
journal = "Physics Letters A",
title = "Wake effect in the interaction of slow correlated charges with supported graphene due to plasmon-phonon hybridization",
volume = "379",
number = "4",
pages = "377-381",
doi = "10.1016/j.physleta.2014.11.044"
}

Marinković, T., Radović, I., Borka, D.,& Mišković, Z. L.. (2015). Wake effect in the interaction of slow correlated charges with supported graphene due to plasmon-phonon hybridization. in Physics Letters A, 379(4), 377-381.
https://doi.org/10.1016/j.physleta.2014.11.044

Marinković T, Radović I, Borka D, Mišković ZL. Wake effect in the interaction of slow correlated charges with supported graphene due to plasmon-phonon hybridization. in Physics Letters A. 2015;379(4):377-381.
doi:10.1016/j.physleta.2014.11.044 .

Marinković, Tijana, Radović, Ivan, Borka, Duško, Mišković, Zoran L., "Wake effect in the interaction of slow correlated charges with supported graphene due to plasmon-phonon hybridization" in Physics Letters A, 379, no. 4 (2015):377-381,
https://doi.org/10.1016/j.physleta.2014.11.044 . .

TY  - JOUR
AU  - Marinković, Tijana
AU  - Radović, Ivan
AU  - Borka, Duško
AU  - Mišković, Zoran L.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/810
AB  - We use the dielectric response formalism to show how an incident charged particle may be used to probe the hybridization taking place between the Dirac plasmon in graphene and the surface optical phonon modes in a SiO2 substrate. Strong effects of this hybridization are found in the wake pattern in the induced potential, as well as in the stopping and image forces that act on the incident charge in a broad range of its velocities. Particularly intriguing is the possibility to control the plasmon-phonon hybridization by varying the doping density of graphene, where the regime of a nominally neutral graphene is expected to give rise to dramatic effects in the energy loss of charged particles that move at the velocities below the Fermi velocity of graphene.
PB  - Springer Nature
T2  - Plasmonics
T1  - Probing the Plasmon-Phonon Hybridization in Supported Graphene by Externally Moving Charged Particles
VL  - 10
IS  - 6
SP  - 1741
EP  - 1749
DO  - 10.1007/s11468-015-9993-3
ER  - 

@article{
author = "Marinković, Tijana and Radović, Ivan and Borka, Duško and Mišković, Zoran L.",
year = "2015",
abstract = "We use the dielectric response formalism to show how an incident charged particle may be used to probe the hybridization taking place between the Dirac plasmon in graphene and the surface optical phonon modes in a SiO2 substrate. Strong effects of this hybridization are found in the wake pattern in the induced potential, as well as in the stopping and image forces that act on the incident charge in a broad range of its velocities. Particularly intriguing is the possibility to control the plasmon-phonon hybridization by varying the doping density of graphene, where the regime of a nominally neutral graphene is expected to give rise to dramatic effects in the energy loss of charged particles that move at the velocities below the Fermi velocity of graphene.",
publisher = "Springer Nature",
journal = "Plasmonics",
title = "Probing the Plasmon-Phonon Hybridization in Supported Graphene by Externally Moving Charged Particles",
volume = "10",
number = "6",
pages = "1741-1749",
doi = "10.1007/s11468-015-9993-3"
}

Marinković, T., Radović, I., Borka, D.,& Mišković, Z. L.. (2015). Probing the Plasmon-Phonon Hybridization in Supported Graphene by Externally Moving Charged Particles. in Plasmonics
Springer Nature., 10(6), 1741-1749.
https://doi.org/10.1007/s11468-015-9993-3

Marinković T, Radović I, Borka D, Mišković ZL. Probing the Plasmon-Phonon Hybridization in Supported Graphene by Externally Moving Charged Particles. in Plasmonics. 2015;10(6):1741-1749.
doi:10.1007/s11468-015-9993-3 .

Marinković, Tijana, Radović, Ivan, Borka, Duško, Mišković, Zoran L., "Probing the Plasmon-Phonon Hybridization in Supported Graphene by Externally Moving Charged Particles" in Plasmonics, 10, no. 6 (2015):1741-1749,
https://doi.org/10.1007/s11468-015-9993-3 . .