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  - 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 . .