Influence of Electric Field on Properties of Strong-coupling Magnetopolaron in Quantum Well

SHAN Shu-ping; XIAO Jing-lin

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Influence of Electric Field on Properties of Strong-coupling Magnetopolaron in Quantum Well

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- Influence of Electric Field on Properties of Strong-coupling Magnetopolaron in Quantum Well
- Chinese Journal of Luminescence Vol. 28, Issue 3, Pages: 307-312(2007)
- 作者机构：
  
  1. 河北科技师范学院, 数理系,河北秦皇岛,066004
  2. 内蒙古民族大学, 物理与电子信息学院,内蒙古通辽,028043
- 作者简介：
- 基金信息：
- DOI：
  CLC： O472.3;O471.3
- Published：20 May 2007，
  
  Received：22 January 2007，
  
  Revised：15 February 2007，
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单淑萍, 肖景林. 电场对量子阱中强耦合磁极化子性质的影响[J]. 发光学报, 2007,28(3): 307-312

SHAN Shu-ping, XIAO Jing-lin. Influence of Electric Field on Properties of Strong-coupling Magnetopolaron in Quantum Well[J]. Chinese Journal of Luminescence, 2007,28(3): 307-312
单淑萍, 肖景林. 电场对量子阱中强耦合磁极化子性质的影响[J]. 发光学报, 2007,28(3): 307-312 DOI：

SHAN Shu-ping, XIAO Jing-lin. Influence of Electric Field on Properties of Strong-coupling Magnetopolaron in Quantum Well[J]. Chinese Journal of Luminescence, 2007,28(3): 307-312 DOI：

摘要

研究了量子阱中强耦合磁极化子在电场作用下的性质

采用线性组合算符及幺正变换的方法导出了强耦合磁极化子的振动频率λ和基态能量

.讨论了强耦合磁极化子的基态能量与阱宽、电场强度、回旋频率之间的关系.通过数值计算

结果表明:强耦合磁极化子的基态能量的绝对值随着阱宽的增加而减小

随着外加电场强度的增加而增加;磁极化子的基态能量的绝对值随着磁场的回旋频率的增加而增加;磁场的回旋频率随着磁极化子的振动频率的增加而增加.

Abstract

The influence of electric field on properties of strong-coupling magnetopolaron in quantum well was investigated using linear-combination operator and unitary transformation method. The ground state energy and vibration frequency of magnetopolaron were obtained. The effects of well-width

electric field strength

and the cyclotron frequency ω

of magnetic field on the ground state energy were discussed. The relations of the ground state energy of the magnetopolaron with the coupling constant

the well-width and the electric field strength are derived. Numerical calculations illustrated that the absolute value of the ground state energy of the strong-coupling magnetopolaron will decrease with increasing the well-width and increase with increasing the external electric field strength. The absolute value of the ground state energy of the strong-coupling magnetopolaron will rise with increasing the cyclotron fre-quency. The smaller well-wider and the larger is the absolute value of the ground state energy of the magnetopolaron

the peculiar quantum size effect is significant.

关键词

线性组合算符磁极化子量子阱电场

Keywords

linear combination operatormagnetopolaronquantum-wellelectric field

references

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Kong X J,Wei C W.Cyclotron resonance of a magnetopolaron in a semiconductor quantum well[J].Phys.Rev.B,1989,39(5):3230-3238.

Wei B H,Liu Y Y,Gu S W.Resonant magnetic fields of a magnetopolaron bound to a Coulomb impurity in a GaAs/Ga1-xAlxAs quantum well[J].Phys.Rev.B,1991,44(11):5703-5707.

Eerdunchaolu,Xiao Jinglin.Electric-magnetic field and temperature dependence of self-energy of the polaro in a quantum well[J].Chin.J.Lumin.(发光学报),1999,20(1):69-70 (in Chinese).

Ferreira R,Soucail B,Voision P,et al.Dimensionality effects on the interband magnetoelectroabsorption of semiconductor superlattices[J].Phys.Rev.B,1990,42(17):11404-11407.

Claro F,Pacheco M,Barticevic Z.Novel electro-optical properties of a semiconductor superlattice under a magnetic field[J].Phys.Rev.Lett.,1990,64(25):3058-3061.

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Brum J A,Priester C,Allan G.Electric field dependence of the binding energy of shallow donors in GaAs-Ga1-xAlxAs quantum wells[J].Phys.Rev.B,1985,32(4):2378-2381.

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Graduate University of Chinese Academy of Sciences

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