Effect of hydrostatic pressure on diamagnetic susceptibility of hydrogenic donor impurity in core/shell/shell spherical quantum dot with Kratzer confining potential

被引：22
|
作者：
Hayrapetyan, D. B. [1 ,2 ]
Amirkhanyan, S. M. [1 ,4 ]
Kazaryan, E. M. [1 ,2 ]
Sarkisyan, H. A. [1 ,2 ,3 ]
机构：
[1] Russian Armenian Univ, 123 Hovsep Emin Str, Yerevan 0051, Armenia
[2] Yerevan State Univ, Ctr Quantum Technol & New Mat, A Manoogian 1, Yerevan 0025, Armenia
[3] Peter Great St Petersburg Polytech Univ, Polytech Skaya 29, St Petersburg 195251, Russia
[4] Natl Lab AI Alikhanyan, 2 A Alikhanian Bros St, Yerevan 0036, Armenia
来源：
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2016年 / 84卷
关键词：
Core/shell/shell spherical quantum dot; Diamagnetic susceptibility; Hydrostatic pressure; Kratzer potential; CONDUCTION-BAND NONPARABOLICITY; LASER DRESSED DONOR; BINDING-ENERGY; PERSISTENT CURRENT; OPTICAL-PROPERTIES; STATES; ELECTRON; FIELD; WELL; RING;
D O I：
10.1016/j.physe.2016.07.028
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The effect of the hydrostatic pressure on diamagnetic susceptibility of on-center hydrogenic donor impurity in Ga1-x1Alx1As/GaAs/Ga1-x2Alx2 core/shell/shell structure with Kratzer confining potential has been theoretically investigated in the framework of the effective mass approximation. The diamagnetic susceptibility has been calculated as a function of the characteristic parameters of Kratzer confining potential. With the increase of the hydrostatic pressure, the diamagnetic susceptibility increases. The same dependence from the depth of the Kratzer potential was obtained. However, the value of the diamagnetic susceptibility became saturated. The results show that with the potential minimum point increase, the diamagnetic susceptibility increases until some critical value, after which it decreases. (C) 2016 Elsevier B.V. All rights reserved.
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页码：367 / 371
页数：5
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