The Effective Mass of Weakly-coupling Polaron in a Triangular Quantum Well Induced by the Rashba Effect

ZHANG Hai-rui; XIAO Jing-lin

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The Effective Mass of Weakly-coupling Polaron in a Triangular Quantum Well Induced by the Rashba Effect

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- The Effective Mass of Weakly-coupling Polaron in a Triangular Quantum Well Induced by the Rashba Effect
- Chinese Journal of Luminescence Vol. 31, Issue 1, Pages: 12-16(2010)
- 作者机构：
  
  1. 内蒙古民族大学物理与电子信息学院,内蒙古通辽,028043
  2. 呼和浩特民族学院数理系,内蒙古呼和浩特,010051
- 作者简介：
- 基金信息：
- DOI：
  CLC： O469
- Received：08 December 2008，
  
  Revised：02 January 1900，
  
  Published Online：20 February 2010，
  
  Published：20 February 2010
- 稿件说明：
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ZHANG Hai-rui, XIAO Jing-lin. The Effective Mass of Weakly-coupling Polaron in a Triangular Quantum Well Induced by the Rashba Effect[J]. Chinese journal of luminescence, 2010, 31(1): 12-16.
DOI：

ZHANG Hai-rui, XIAO Jing-lin. The Effective Mass of Weakly-coupling Polaron in a Triangular Quantum Well Induced by the Rashba Effect[J]. Chinese journal of luminescence, 2010, 31(1): 12-16. DOI：

摘要

采用改进的线性组合算符和幺正变换相结合的方法

导出了三角量子阱中弱耦合极化子的有效质量。讨论了极化子速度、电声子耦合常数和电子面密度对极化子有效质量的影响。通过对GaAs材料的数值计算结果表明:因为电-声子耦合作用和Rashba效应的存在

发现弱耦合极化子的有效质量由两部分组成

而且弱耦合极化子的有效质量随电声子耦合常数、电子面密度和极化子速度都发生了分裂。

Abstract

Tokuda-modified linear-combination operator method and the unitary transformation method were used to study the properties of the weakly-coupling polaron

considering the influence of Rashba effect

which is brought by the spin-orbit(SO) interaction

in an semiconductor triangular quantum well(TQW). Numerical calculation on the GaAs TQW

as the example

is performed. The expressions for the effective mass of the polaron as a function of the velocity

the coupling constant and the electron area density were derived. Numerical results showed that the total effective mass of the polaron is composed of two parts. The interactions between the orbit and the spin with different direction have different effects on the effective mass of the polaron.

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references

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