非对称半指数量子阱中强耦合极化子振动频率

量子电子学报 ›› 2020, Vol. 37 ›› Issue (6): 699-703.

非对称半指数量子阱中强耦合极化子振动频率

张建芳, 肖景林∗

内蒙古民族大学凝聚态物理研究所, 内蒙古通辽028043

收稿日期:2019-11-20 修回日期:2020-01-14 出版日期:2020-11-28 发布日期:2020-11-28
通讯作者: E-mail: xiaojlin@126.com E-mail:13789751214@139.com
作者简介:张建芳( 1982 - ), 女, 内蒙古通辽人, 硕士, 副教授, 主要从事凝聚态物理方面的研究。E-mail: 15147563722@163.com
基金资助:
Supported by National Natural Science Foundation of China (国家自然科学基金, 11464033), University Science Research Project of Inner Mogolia Autonomous Region of China (内蒙古自治区高校科学研究项目, NJZY13324)

Vibrational frequency of strong-coupling polaron in asymmetrical semi-exponential quantum well

ZHANG Jianfang, XIAO Jinglin∗

Institute of Condensed Matter Physics, Inner Mongolia University for Nationalities, Tongliao 028043, China

Received:2019-11-20 Revised:2020-01-14 Published:2020-11-28 Online:2020-11-28

摘要/Abstract

摘要： 采用Huybrechts 线性组合算符和第二次Lee-Low-Pines (LLP) 幺正变换方法研究了非对称半指数量子阱中强耦合极化子的性质。得到了RbCl 非对称半指数量子阱中强耦合极化子的振动频率和基态能量, 并理论上导出了振动频率和基态能量随受限势的两个正参量(U0 和) 的变化关系。选择RbCl 晶体材料进行数值计算, 研究结果表明: U0 和是研究非对称半指数量子阱中极化子性质的重要物理量, 非对称半指数量子阱的振动频率和基态能量随U0 的增加而增大, 随的增加而减少。

关键词: 光电子学, 非对称半指数量子阱, 线性组合算符, 强耦合极化子, 振动频率, 基态能量

Abstract: By using Huybrechts′ linear combination operator and the second Lee-Low-Pines (LLP) unitary transformation method, the properties of the strong-coupling polaron in RbCl asymmetrical semiexponential quantum well are investigated. The vibrational frequency and ground state energy of the strong-coupling polaron in a RbCl asymmetrical semi-exponential quantum well are obtained, and the variation of the vibrational frequency and ground state energy with the two positive parameters (U0 and ) of the asymmetrical semi-exponential confinement potential is derived theoretically. RbCl crystal material is selected for numerical calculation, and the results indicate that U0 and are important physical quantities for investigating the properties of the strong-coupling polaron in asymmetrical semiexponential quantum well, and the vibrational frequency and ground state energy of the strong-coupling polaron increase with the increase of U0, while decrease with the increase of .

Key words: optoelectronics, asymmetrical semi-exponential quantum well, linear combination operator; strong-coupling polaron, vibrational frequency, ground state energy

中图分类号:

O469

张建芳, 肖景林∗. 非对称半指数量子阱中强耦合极化子振动频率[J]. 量子电子学报, 2020, 37(6): 699-703.

ZHANG Jianfang, XIAO Jinglin∗. Vibrational frequency of strong-coupling polaron in asymmetrical semi-exponential quantum well[J]. Chinese Journal of Quantum Electronics, 2020, 37(6): 699-703.

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