中国物理B ›› 2017, Vol. 26 ›› Issue (12): 127305-127305.doi: 10.1088/1674-1056/26/12/127305

• SPECIAL TOPIC—Non-equilibrium phenomena in soft matters • 上一篇    下一篇

Quantum oscillations and nontrivial transport in (Bi0.92In0.08)2Se3

Minhao Zhang(张敏昊), Yan Li(李焱), Fengqi Song(宋凤麒), Xuefeng Wang(王学锋), Rong Zhang(张荣)   

  1. 1. National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China;
    2. National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, School of Physics, Nanjing University, Nanjing 210093, China
  • 收稿日期:2017-10-24 修回日期:2017-10-29 出版日期:2017-12-05 发布日期:2017-12-05
  • 通讯作者: Xuefeng Wang E-mail:xfwang@nju.edu.cn
  • 基金资助:

    Project supported by the National Key Basic Research Program of China (Grant Nos. 2014CB921103 and 2017YFA0206304), the National Natural Science Foundation of China (Grant Nos. U1732159 and 11274003), and Collaborative Innovation Center of Solid-State Lighting and Energy-Saving Electronics, China.

Quantum oscillations and nontrivial transport in (Bi0.92In0.08)2Se3

Minhao Zhang(张敏昊)1, Yan Li(李焱)1, Fengqi Song(宋凤麒)2, Xuefeng Wang(王学锋)1, Rong Zhang(张荣)1   

  1. 1. National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China;
    2. National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, School of Physics, Nanjing University, Nanjing 210093, China
  • Received:2017-10-24 Revised:2017-10-29 Online:2017-12-05 Published:2017-12-05
  • Contact: Xuefeng Wang E-mail:xfwang@nju.edu.cn
  • Supported by:

    Project supported by the National Key Basic Research Program of China (Grant Nos. 2014CB921103 and 2017YFA0206304), the National Natural Science Foundation of China (Grant Nos. U1732159 and 11274003), and Collaborative Innovation Center of Solid-State Lighting and Energy-Saving Electronics, China.

摘要:

Quantum phase transition in topological insulators has drawn heightened attention in condensed matter physics and future device applications. Here we report the magnetotransport properties of single crystalline (Bi0.92In0.08)2Se3. The average mobility of~1000 cm2·V-1·s-1 is obtained from the Lorentz law at the low field (< 3 T) up to 50 K. The quantum oscillations rise at a field of~5 T, revealing a high mobility of~1.4×104 cm2·V-1·s-1 at 2 K. The Dirac surface state is evident by the nontrivial Berry phase in the Landau-Fan diagram. The properties make the (Bi0.92In0.08)2Se3 a promising platform for the investigation of quantum phase transition in topological insulators.

关键词: quantum phase transition, topological insulators, quantum oscillations, Dirac surface state, nontrivial Berry phase

Abstract:

Quantum phase transition in topological insulators has drawn heightened attention in condensed matter physics and future device applications. Here we report the magnetotransport properties of single crystalline (Bi0.92In0.08)2Se3. The average mobility of~1000 cm2·V-1·s-1 is obtained from the Lorentz law at the low field (< 3 T) up to 50 K. The quantum oscillations rise at a field of~5 T, revealing a high mobility of~1.4×104 cm2·V-1·s-1 at 2 K. The Dirac surface state is evident by the nontrivial Berry phase in the Landau-Fan diagram. The properties make the (Bi0.92In0.08)2Se3 a promising platform for the investigation of quantum phase transition in topological insulators.

Key words: quantum phase transition, topological insulators, quantum oscillations, Dirac surface state, nontrivial Berry phase

中图分类号:  (Galvanomagnetic and other magnetotransport effects)

  • 73.50.Jt
05.30.Rt (Quantum phase transitions) 81.10.-h (Methods of crystal growth; physics and chemistry of crystal growth, crystal morphology, and orientation)