抛物线量子阱中极子的温度效应和拉什巴效应

IF 0.6 4区物理与天体物理 Q4 PHYSICS, APPLIED

Low Temperature Physics Pub Date : 2024-02-22 DOI:10.1063/10.0024330

Shu-Ping Shan

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引用次数: 0

摘要

利用德田改进的线性组合算子方法和变分技术，推导出抛物面量子井中极子有效质量的表达式。由于自旋轨道相互作用，极子的有效质量分成两个分支。通过数值计算讨论了有效质量与温度和声子平均数量的关系。极子的有效质量是温度和声子均值的递增函数。总自旋分裂有效质量的绝对值随温度和自旋轨道耦合参数的增大而增大，随速度的增大而减小。由于重空穴特性，自旋分裂有效质量为负值。

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Temperature effect and Rashba effect of polaron in a parabolic quantum well

Using Tokuda’s improved linear combination operator method and variational technique, the expression of the polaron effective mass in an parabolic quantum well is derived. Due to the spin-orbit interaction, the effective mass of polaron splits into two branches. The dependence of effective mass on temperature and mean number phonons is discussed by numerical calculation. The effective mass of polaron is an increasing function of temperature and mean number phonons. The absolute value of total spin splitting effective mass increases with the increase in temperature and spin-orbit coupling parameter, and decreases with the increase in velocity. Due to the heavy hole characteristic, the spin splitting effective mass is negative.

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来源期刊

Low Temperature Physics 物理-物理：应用

CiteScore

1.20

自引率

25.00%

发文量

138

审稿时长

3 months

期刊介绍： Guided by an international editorial board, Low Temperature Physics (LTP) communicates the results of important experimental and theoretical studies conducted at low temperatures. LTP offers key work in such areas as superconductivity, magnetism, lattice dynamics, quantum liquids and crystals, cryocrystals, low-dimensional and disordered systems, electronic properties of normal metals and alloys, and critical phenomena. The journal publishes original articles on new experimental and theoretical results as well as review articles, brief communications, memoirs, and biographies. Low Temperature Physics, a translation of the copyrighted Journal FIZIKA NIZKIKH TEMPERATUR, is a monthly journal containing English reports of current research in the field of the low temperature physics. The translation began with the 1975 issues. One volume is published annually beginning with the January issues.