Excitation of plasmon wakes in two-dimensional electron systems by moving external charged particles
Само за регистроване кориснике
2017
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
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.
Кључне речи:
Two-dimensional electron gas / graphene / plasmon / wake effect / dielectric functionИзвор:
Radiation Effects and Defects in Solids, 2017, 172, 1-2, 90-99Финансирање / пројекти:
- Функционални, функционализовани и усавршени нано материјали (RS-45005)
- Serbia-China Bilateral project [337-00-125/2015-09/11]
- National Natural Science Foundation of China [11275038, 11675036]
- Natural Sciences and Engineering Research Council of Canada [249506-2011]
DOI: 10.1080/10420150.2017.1286661
ISSN: 1042-0150; 1029-4953
WoS: 000399481700011
Scopus: 2-s2.0-85017608317
Колекције
Институција/група
VinčaTY - 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 . .