Shubnikov de Haas quantum oscillation of the surface states in the metallic Bismuth Telluride sheets

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• 作者：Taishi Chen (1501)
  Junhao Han (1501)
  Zhaoguo Li (1501)
  Fengqi Song (1501)
  Bo Zhao (1501)
  Xuefeng Wang (1501)
  Baigeng Wang (1501)
  Jianguo Wan (1501)
  Min Han (1501)
  Rong Zhang (1501)
  Guanghou Wang (1501)
  
• 刊名：The European Physical Journal D - Atomic, Molecular and Optical Physics
• 出版年：2013
• 出版时间：April 2013
• 年：2013
• 卷：67
• 期：4
• 全文大小：363KB
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• 作者单位：Taishi Chen (1501)
  Junhao Han (1501)
  Zhaoguo Li (1501)
  Fengqi Song (1501)
  Bo Zhao (1501)
  Xuefeng Wang (1501)
  Baigeng Wang (1501)
  Jianguo Wan (1501)
  Min Han (1501)
  Rong Zhang (1501)
  Guanghou Wang (1501)
  
  1501. National Laboratory of Solid State Microstructures, Nanjing University, Nanjing, 210093, P.R. China
  
• ISSN：1434-6079

文摘

Metallic Bi2Te3 crystalline sheets with the room-temperature resistivity of above?10?mΩ cm were prepared and their magnetoresistive transport was measured in a field of up to?9?T. The Shubnikov de Haas oscillations were identified from the secondly-derived magnetoresistance curves. While changing the angle between the field and normal axis of the sheets, we find that the oscillation periods present a cosine dependence on the angle. This indicates a two-dimensional transport due to the surface state. The work reveals a resolvable surface contribution to the overall conduction even in a metallic topological insulator.