Impurity states in a narrow band gap semiconductor quantum dot with parabolic confinement potential

被引：24
|
作者：
Kazaryan, EM [1 ]
Petrosyan, LS [1 ]
Sarkisyan, HA [1 ]
机构：
[1] Yerevan State Univ, Dept Phys, Yerevan 375025, Armenia
来源：
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2003年 / 16卷 / 02期
关键词：
parabolic potential; impurity states; quantum dot;
D O I：
10.1016/S1386-9477(02)00662-8
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Impurity states in a narrow band gap semiconductor quantum dot are studied theoretically. The quantum dot confinement potential is approximated by the three-dimensional spherically symmetric parabolic potential. The electron dispersion law is considered within the framework of two-band Kane model. It is shown that the nonparabolicity leads to the Schroedinger equation with the effective oscillatory potential containing terms proportional to 1/r, r, r(4). Within the framework of the stationary theory of perturbation the energy corrections due to these terms are calculated. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：174 / 178
页数：5
相关论文
共 50 条
  • [21] A bipolaron in a spherical quantum dot with parabolic confinement
    Pokatilov, EP
    Fomin, VM
    Devreese, JT
    Balaban, SN
    Klimin, SN
    JOURNAL OF PHYSICS-CONDENSED MATTER, 1999, 11 (46) : 9033 - 9043
  • [22] Electron energy level calculations for cylindrical narrow gap semiconductor quantum dot
    Li, YM
    Liu, JL
    Voskoboynikov, O
    Lee, CP
    Sze, SM
    COMPUTER PHYSICS COMMUNICATIONS, 2001, 140 (03) : 399 - 404
  • [23] A parabolic quantum dot with N electrons and an impurity
    Gülveren, B
    Atav, Ü
    Sahin, M
    Tomak, M
    PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 2005, 30 (1-2): : 143 - 149
  • [24] Simple wavefunction for an impurity in a parabolic quantum dot
    Varshni, YP
    SUPERLATTICES AND MICROSTRUCTURES, 1998, 23 (01) : 145 - 149
  • [25] Effect of the parabolic potential on the binding energy of a hydrogenic impurity in a spherical quantum dot
    Xiao, ZG
    Zhu, JQ
    He, FL
    SUPERLATTICES AND MICROSTRUCTURES, 1996, 19 (02) : 137 - 149
  • [26] Off-center hydrogenic impurity in spherical quantum dot with parabolic potential
    Yakar, Yusuf
    Cakir, Bekir
    Ozmen, Ayhan
    SUPERLATTICES AND MICROSTRUCTURES, 2013, 60 : 389 - 397
  • [27] QUANTUM-DOT HELIUM - EFFECTS OF DEVIATIONS FROM A PARABOLIC CONFINEMENT POTENTIAL
    PFANNKUCHE, D
    GERHARDTS, RR
    PHYSICAL REVIEW B, 1991, 44 (23): : 13132 - 13135
  • [28] Magnetic impurity in a quantum well of a IV-VI narrow-gap semiconductor
    Dugaev, VK
    Litvinov, VI
    Petrov, PP
    SEMICONDUCTOR SCIENCE AND TECHNOLOGY, 1996, 11 (01) : 80 - 83
  • [29] Impurity binding energies in quantum dots with parabolic confinement
    Abramov, Arnold
    PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 2015, 67 : 28 - 32
  • [30] Photoemission measurements of quantum states in accumulation layers at narrow band gap III-V semiconductor surfaces
    Aristov, VY
    Zhilin, VM
    Grupp, C
    Taleb-Ibrahimi, A
    Kim, HJ
    Mangat, PS
    Soukiassian, P
    Le Lay, G
    APPLIED SURFACE SCIENCE, 2000, 166 (1-4) : 263 - 267
12345