Quantum oscillation of Rashba spin splitting in topological insulator Bi2Se3 induced by the quantum size effects of Pb adlayers

Hong Yang, Xiangyang Peng, Xiaolin Wei, Wenliang Liu, Wenguang Zhu, Di Xiao, G. Malcolm Stocks, and Jianxin Zhong
Phys. Rev. B 86, 155317 – Published 23 October 2012

Abstract

Based on first-principles calculations within density functional theory, we find that Pb adlayers can induce a giant Rashba spin splitting in the quantum well states of an underlying Bi2Se3 film. As the thickness of the Pb adlayers varies, the distance between the Pb adlayer and the Bi2Se3 film, the charge density at the interface, and the binding between the Pb adlayers exhibit an oscillatory behavior due to the quantum size effects, which in turn modulates the magnitude of the Rashba spin splitting of the quantum well states in the Bi2Se3 film.

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  • Received 23 July 2012

DOI:https://doi.org/10.1103/PhysRevB.86.155317

©2012 American Physical Society

Authors & Affiliations

Hong Yang1,2,3, Xiangyang Peng1,2,*, Xiaolin Wei1,2, Wenliang Liu1,2, Wenguang Zhu4, Di Xiao4, G. Malcolm Stocks4, and Jianxin Zhong1,2,†

  • 1Hunan Key Laboratory of Micro-Nano Energy Materials and Devices, Xiangtan University, Hunan 411105, P.R. China
  • 2Laboratory for Quantum Engineering and Micro-Nano Energy Technology and Faculty of Materials and Optoelectronic Physics, Xiangtan University, Hunan 411105, P.R. China
  • 3Department of Physics, Jishou University, Hunan 416000, P.R. China
  • 4Materials Science & Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA

  • *xiangyang_peng@xtu.edu.cn
  • jxzhong@xtu.edu.cn

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Issue

Vol. 86, Iss. 15 — 15 October 2012

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