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Properties of polaron in a triangular quantum well induced by the Rashba effect*
  • ISSN号:1674-4926
  • 期刊名称:《半导体学报:英文版》
  • 时间:0
  • 分类:O471.1[理学—半导体物理;理学—物理] O482[理学—固体物理;理学—物理]
  • 作者机构:[1]Department of Mathematics, Huhhot University of Nationalities, Huhhot 010051, China, [2]College of Physics and Electronic Information, Inner Mongolia National University, Tongliao 028043, China
  • 相关基金:Project supported by the National Science Foundation of China Higher University (No. 10347004), the Science Study Foundation of Inner Mongolia (No. NJZY08085), and the Science Foundation of Huhhot University of Nationalities (No. HMZZ 1201).
作者: 张海瑞, 孙勇
中文摘要:

The properties of the weakly-coupling bound polaron, considering an influence of Rashba effect, which is brought about by the spin-orbit(SO) interaction, in an semiconductor triangular quantum well(TQW), have been studied by using the linear combination operator and the unitary transformation methods. We obtain an expression for the ground state energy of the weak-coupling and bound polaron in a TQW as a function of the coupling constant,Coulomb bound potential, and the electron areal density. Our numerical results show that the ground state energy of the polaron is composed of four parts, one part is caused by the electrons’ own energy, the second part is caused by the Rashba effect, the third part occurs because of the Coulomb bound potential, and the last term is induced by the interaction between the electrons and LO phonons. The interactions between the orbit and the spin with different directions have different effects on the ground state energy of the polaron.

英文摘要:

The properties of the weakly-coupling bound polaron, considering an influence of Rashba effect, which is brought about by the spin-orbit (SO) interaction, in an semiconductor triangular quantum well (TQW), have been studied by using the linear combination operator and the unitary transformation methods. We obtain an expression for the ground state energy of the weak-coupling and bound polaron in a TQW as a function of the coupling constant, Coulomb bound potential, and the electron areal density. Our numerical resuks show that the ground state energy of the polaron is composed of four parts, one part is caused by the electrons' own energy, the second part is caused by the Rashba effect, the third part occurs because of the Coulomb bound potential, and the last term is induced by the interaction between the electrons and LO phonons. The interactions between the orbit and the spin with different directions have different effects on the ground state energy of the polaron.

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期刊信息
  • 《半导体学报:英文版》
  • 中国科技核心期刊
  • 主管单位:中国科学院
  • 主办单位:中国电子学会 中国科学院半导体研究所
  • 主编:李树深
  • 地址:北京912信箱
  • 邮编:100083
  • 邮箱:cjs@semi.ac.cn
  • 电话:010-82304277
  • 国际标准刊号:ISSN:1674-4926
  • 国内统一刊号:ISSN:11-5781/TN
  • 邮发代号:2-184
  • 获奖情况:
  • 90年获中科院优秀期刊二等奖,92年获国家科委、中共中央宣传部和国家新闻出版署...,97年国家科委、中共中央中宣传部和国家新出版署三等奖,中国期刊方阵“双效”期刊
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  • 被引量:7754