Interactions of charged particle beams with double-layered two-dimensional quantum electron gases

被引：7
作者：
Li, Chun-Zhi [1 ]
Wang, You-Nian [2 ]
Song, Yuan-Hong [2 ]
Miskovic, Zoran L. [3 ,4 ]
机构：
[1] Inner Mongolia Univ Nationalities, Coll Phys & Elect Informat, Tongliao 028043, Peoples R China
[2] Dalian Univ Technol, Sch Phys & Optoelect Technol, Dalian 116023, Peoples R China
[3] Univ Waterloo, Dept Appl Math, Waterloo, ON N2L 3G1, Canada
[4] Univ Waterloo, Waterloo Inst Nanotechnol, Waterloo, ON N2L 3G1, Canada
来源：
PHYSICS LETTERS A | 2014年 / 378卷 / 22-23期
基金：
中国国家自然科学基金; 加拿大自然科学与工程研究理事会;
关键词：
CARBON NANOTUBES; FAST IONS; DYNAMIC INTERACTIONS; GRAPHENE; ELECTRODYNAMICS; SYSTEMS; MODEL;
D O I：
10.1016/j.physleta.2014.04.007
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We investigate the interactions of external charged particles with a double-layered two-dimensional quantum electron gas (2DQEG), describing its collective or plasmon excitations by using the linearized quantum hydrodynamic (QHD) model. General expressions are derived for electron densities in the two layers, the induced potential, and the stopping and image forces on an external charged particle. Our calculations indicate that an oscillatory wake effect arises in the induced potential for a particle moving parallel the 2DQEG layers. In addition, double peaks are found in the stopping and image forces due to plasmon hybridization between the two 2DQEG layers. Finally, the induced number density in the double-layered 2DQEG is compared with the case of a single-layer 2DQEG supported by an insulating substrate. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：1626 / 1631
页数：6
相关论文
共 34 条
  • [1] Friction force on slow charges moving over supported graphene
    Allison, K. F.
    Miskovic, Z. L.
    [J]. NANOTECHNOLOGY, 2010, 21 (13)
  • [2] Dynamic polarization of graphene by moving external charges: Random phase approximation
    Allison, K. F.
    Borka, D.
    Radovic, I.
    Hadzievski, Lj.
    Miskovic, Z. L.
    [J]. PHYSICAL REVIEW B, 2009, 80 (19):
  • [3] Dynamic interactions of fast ions with multiwalled carbon nanotubes
    Chung, Sangwoo
    Mowbray, D. J.
    Miskovic, Z. L.
    Goodman, F. O.
    Wang, You-Nian
    [J]. RADIATION PHYSICS AND CHEMISTRY, 2007, 76 (03) : 524 - 528
  • [4] Optical properties of graphite
    Djurisic, AB
    Li, EH
    [J]. JOURNAL OF APPLIED PHYSICS, 1999, 85 (10) : 7404 - 7410
  • [5] Plasmon spectroscopy of free-standing graphene films
    Eberlein, T.
    Bangert, U.
    Nair, R. R.
    Jones, R.
    Gass, M.
    Bleloch, A. L.
    Novoselov, K. S.
    Geim, A.
    Briddon, P. R.
    [J]. PHYSICAL REVIEW B, 2008, 77 (23)
  • [6] Ellipsometric studies on ZnO:Al thin films: Refinement of dispersion theories
    Ehrmann, Nicole
    Reineke-Koch, Rolf
    [J]. THIN SOLID FILMS, 2010, 519 (04) : 1475 - 1485
  • [7] ELECTRODYNAMICS OF A LAYERED ELECTRON-GAS .2. PERIODIC ARRAY
    FETTER, AL
    [J]. ANNALS OF PHYSICS, 1974, 88 (01) : 1 - 25
  • [8] ELECTRODYNAMICS OF A LAYERED ELECTRON-GAS .1. SINGLE LAYER
    FETTER, AL
    [J]. ANNALS OF PHYSICS, 1973, 81 (02) : 367 - 393
  • [9] Multistream model for quantum plasmas
    Haas, F
    Manfredi, G
    Feix, M
    [J]. PHYSICAL REVIEW E, 2000, 62 (02): : 2763 - 2772
  • [10] Plasmon modes of spatially separated double-layer graphene
    Hwang, E. H.
    Das Sarma, S.
    [J]. PHYSICAL REVIEW B, 2009, 80 (20)
1234