Electronic density of states for two-dimensional system in uniform magnetic and Aharonov-Bohm fields

被引：0
|
作者：
Slobodeniuk, A. O. [1 ]
Sharapov, S. G. [1 ]
Loktev, V. M. [1 ,2 ]
机构：
[1] Natl Acad Sci Ukraine, Bogolyubov Inst Theoret Phys, UA-03680 Kiev, Ukraine
[2] Natl Tech Univ Ukraine KPI, UA-03056 Kiev, Ukraine
来源：
LOW TEMPERATURE PHYSICS | 2011年 / 37卷 / 11期
基金：
瑞士国家科学基金会;
关键词：
Aharonov-Bohm effect; electronic density of states; Landau levels; Schrodinger equation; spin Hamiltonians; two-dimensional electron gas; vortices; wave functions; SCATTERING; TUBES; FLUX;
D O I：
10.1063/1.3672156
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We study two-dimensional electronic gas (2DEG) in the background of the Aharonov-Bohm and constant magnetic fields. The problem of ambiguity of the solutions of the Schroumldinger equation is investigated by introducing a finite radius of the flux tube, which then set to zero. Wave functions and spectrum of the 2DEG Hamiltonian are used to construct an expression for the local density of states (LDOS). We obtain that LDOS has a depletion near the origin of the vortex and new peaks, which can't be explained by using Landau levels theory. (C) 2012 American Institute of Physics. [doi: 10.1063/1.3672156]
引用
收藏
页码：940 / 946
页数：7
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