A quantum pseudodot system with two-dimensional pseudoharmonic oscillator in external magnetic and Aharonov-Bohm fields

被引：53
|
作者：
Ikhdair, Sameer M. [2 ]
Hamzavi, Majid [1 ]
机构：
[1] Islamic Azad Univ, Dept Basic Sci, Shahrood Branch, Shahrood, Iran
[2] Near East Univ, Dept Phys, TR-922022 Nicosia, North Cyprus, Turkey
来源：
PHYSICA B-CONDENSED MATTER | 2012年 / 407卷 / 21期
关键词：
Pseudoharmonic potential; Quantum dot and antidot; Magnetic and AB flux fields; Light interband transition; Threshold frequency of absorption; Nikiforov-Uvarov method; INTERBAND LIGHT-ABSORPTION; HYDROSTATIC-PRESSURE; BINDING-ENERGY; EXCITED-STATES; DONOR STATES; TEMPERATURE; DOT; GAAS;
D O I：
10.1016/j.physb.2012.07.004
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Using the Nikiforov-Uvarov (NU) method, the energy levels and the wave functions of an electron confined in a two-dimensional (2D) pseudoharmonic quantum dot are calculated under the influence of temperature and an external magnetic field inside dot and Aharonov-Bohm (AB) field inside a pseudodot. The exact solutions for energy eigenvalues and wave functions are computed as functions of the chemical potential parameters, applied magnetic field strength, AB flux field, magnetic quantum number and temperature. Analytical expression for the light interband absorption coefficient and absorption threshold frequency are found as functions of applied magnetic field and geometrical size of quantum pseudodot. The temperature dependence energy levels for GaAs semiconductor are also calculated. (c) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：4198 / 4207
页数：10
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