量子电子学报 ›› 2021, Vol. 38 ›› Issue (4): 539-544.doi: 10.3969/j.issn.1007-5461.2021.04.016

• 半导体光电 • 上一篇    

单层过渡金属硫族化合物中弱耦合极化子的磁场效应

裴志成, 丁朝华∗, 耿艳波, 肖景林   

  1. ( 内蒙古民族大学数理学院, 内蒙古 通辽 028043 )
  • 收稿日期:2020-08-17 修回日期:2021-07-26 出版日期:2021-07-28 发布日期:2021-07-27
  • 通讯作者: E-mail: dzhaohua@126.com
  • 作者简介:裴志成( 1987 - ), 内蒙古通辽人, 研究生, 主要从事低维量子系统电子性质方面的研究。 E-mail: 648833421@qq.com
  • 基金资助:
    Supported by National Natural Science Foundation of China (国家自然科学基金, 11464033), Natural Science Foundation of Inner Mongolia Autonomous Region, China (内蒙古自然科学基金, 2019MS01008)

Magnetic field effect of weak coupling polaron of monolayer transition metal dichalcogenides

PEI Zhicheng, DING Zhaohua∗, GENG Yanbo, XIAO Jinling   

  1. ( College of Mathematics and Physics, Inner Mongolia University for Nationalites, Tongliao 028043, China )
  • Received:2020-08-17 Revised:2021-07-26 Published:2021-07-28 Online:2021-07-27

摘要: 利用 LLP 幺正变换与线性组合算符相结合的方法研究了磁场作用下单层过渡金属硫族化合物 ( TMDs ) 中弱耦合极化子基态能量的性质, 获得了单层过渡金属硫族化合物中弱耦合极化子的基态能量与磁场、声子的德 拜截止波数 ( DW )、内部距离和本征极化率参数之间的依赖关系。计算结果表明: 单层过渡金属硫族化合物弱耦 合极化子的基态能量为外加磁场和本征极化率参数的增函数、声子的德拜截止波数和内部距离的减函数。

关键词: 光电子学, 单层过渡金属硫族化合物, 弱耦合, 极化子, 基态能量, 磁场

Abstract: The effect of magnetic field (MF) on the ground state energy of weak coupling polarons in monolayer transition metal dichalcogenides (TMDs) is studied by using LLP unitary transformation and linear combination operator. The dependence of the ground state energy of weak coupling polarons on MF, Debye cutoff wave number (DW), internal distance and intrinsic polarizability parameters of the phonon in MF is obtained. The numerical calculation results show that the ground state energy of the weak coupling polarons increases with the increase of magnetic field and the intrinsic polarizability parameter, and decreases with the increase of DW and internal distance of the phonon.

Key words: optoelectronics, monolayer transition metal dichalcogenides, weak coupling, polaron; ground state energy, magnetic field

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