Effects of external electric and magnetic fields, hydrostatic pressure and temperature on the binding energy of a hydrogenic impurity confined in a two-dimensional quantum dot

被引：41

作者：

Rezaei, G. ^{[1
]}

Kish, S. Shojaeian ^{[1
]}

机构：

[1] Univ Yasuj, Dept Phys, Coll Sci, Yasuj 75914353, Iran

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2012年 / 45卷

关键词：

DONOR IMPURITY; STATES;

D O I：

10.1016/j.physe.2012.07.009

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Based on the effective-mass approximation, simultaneous effects of external electric and magnetic fields, hydrostatic pressure and temperature on the binding energy of a hydrogenic donor impurity confined in a two-dimensional parabolic quantum dot have been studied, using the direct matrix diagonalization method. The binding energy dependencies upon the external electric field strength and direction, magnetic field, hydrostatic pressure and temperature are reported. The results reveal that the external electric and magnetic fields, hydrostatic pressure and temperature have a great influence on the impurity binding energy. Moreover, an increase in the tilt angle reduces the binding energy, especially at weak confinement regimes. (C) 2012 Elsevier B.V. All rights reserved.

引用

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页码：56 / 60

页数：5

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