中国物理B ›› 2019, Vol. 28 ›› Issue (3): 37104-037104.doi: 10.1088/1674-1056/28/3/037104

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

Negative differential resistance and quantum oscillations in FeSb2 with embedded antimony

Fangdong Tang(汤方栋), Qianheng Du(杜乾衡), Cedomir Petrovic, Wei Zhang(张威), Mingquan He(何明全), Liyuan Zhang(张立源)   

  1. 1 Department of Physics and Beijing Key Laboratory of Optoelectronic Functional Materials & Micro-nano Devices, Renmin University of China, Beijing 100872, China;
    2 Department of Physics, Southern University of Science and Technology, and Shenzhen Institute for Quantum Science and Engineering, Shenzhen 518055, China;
    3 Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA;
    4 Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11790, USA;
    5 Chongqing Key Laboratory of Soft Condensed Matter Physics and Smart Materials, College of Physics, Chongqing University, Chongqing 401331, China
  • 收稿日期:2018-12-22 修回日期:2019-01-23 出版日期:2019-03-05 发布日期:2019-03-05
  • 通讯作者: Liyuan Zhang E-mail:zhangly@sustc.edu.cn
  • 基金资助:

    Project supported by Guangdong Innovative and Entrepreneurial Research Team Program, China (Grant No. 2016ZT06D348), the National Natural Science Foundation of China (Grant No. 11874193), and the Shenzhen Fundamental Subject Research Program, China (Grant Nos. JCYJ20170817110751776 and JCYJ20170307105434022). The work at Brookhaven is supported by the US Department of Energy, Office of Basic Energy Sciences as part of the Computational Material Science Program (material synthesis).

Negative differential resistance and quantum oscillations in FeSb2 with embedded antimony

Fangdong Tang(汤方栋)1,2, Qianheng Du(杜乾衡)3,4, Cedomir Petrovic3,4, Wei Zhang(张威)1, Mingquan He(何明全)5, Liyuan Zhang(张立源)2   

  1. 1 Department of Physics and Beijing Key Laboratory of Optoelectronic Functional Materials & Micro-nano Devices, Renmin University of China, Beijing 100872, China;
    2 Department of Physics, Southern University of Science and Technology, and Shenzhen Institute for Quantum Science and Engineering, Shenzhen 518055, China;
    3 Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA;
    4 Department of Materials Science and Chemical Engineering, Stony Brook University, Stony Brook, New York 11790, USA;
    5 Chongqing Key Laboratory of Soft Condensed Matter Physics and Smart Materials, College of Physics, Chongqing University, Chongqing 401331, China
  • Received:2018-12-22 Revised:2019-01-23 Online:2019-03-05 Published:2019-03-05
  • Contact: Liyuan Zhang E-mail:zhangly@sustc.edu.cn
  • Supported by:
    Project supported by Guangdong Innovative and Entrepreneurial Research Team Program, China (Grant No. 2016ZT06D348), the National Natural Science Foundation of China (Grant No. 11874193), and the Shenzhen Fundamental Subject Research Program, China (Grant Nos. JCYJ20170817110751776 and JCYJ20170307105434022). The work at Brookhaven is supported by the US Department of Energy, Office of Basic Energy Sciences as part of the Computational Material Science Program (material synthesis).

摘要:

We present a systematical study on single crystalline FeSb2 using electrical transport and magnetic torque measurements at low temperatures. Nonlinear magnetic field dependence of Hall resistivity demonstrates a multi-carrier transport instinct of the electronic transport. Current-controlled negative differential resistance (CC-NDR) observed in current-voltage characteristics below~7 K is closely associated with the intrinsic transition~5 K of FeSb2, which is, however, mediated by extrinsic current-induced Joule heating effect. The antimony crystallized in a preferred orientation within the FeSb2 lattice in the high-temperature synthesis process leaves its fingerprint in the de Haas-Van Alphen (dHvA) oscillations, and results in the regular angular dependence of the oscillating frequencies. Nevertheless, possible existence of intrinsic non-trivial states cannot be completely ruled out. Our findings call for further theoretical and experimental studies to explore novel physics on flux-free grown FeSb2 crystals.

关键词: two-carrier transport, negative differential resistance, quantum oscillations, FeSb2 with embedded antimony

Abstract:

We present a systematical study on single crystalline FeSb2 using electrical transport and magnetic torque measurements at low temperatures. Nonlinear magnetic field dependence of Hall resistivity demonstrates a multi-carrier transport instinct of the electronic transport. Current-controlled negative differential resistance (CC-NDR) observed in current-voltage characteristics below~7 K is closely associated with the intrinsic transition~5 K of FeSb2, which is, however, mediated by extrinsic current-induced Joule heating effect. The antimony crystallized in a preferred orientation within the FeSb2 lattice in the high-temperature synthesis process leaves its fingerprint in the de Haas-Van Alphen (dHvA) oscillations, and results in the regular angular dependence of the oscillating frequencies. Nevertheless, possible existence of intrinsic non-trivial states cannot be completely ruled out. Our findings call for further theoretical and experimental studies to explore novel physics on flux-free grown FeSb2 crystals.

Key words: two-carrier transport, negative differential resistance, quantum oscillations, FeSb2 with embedded antimony

中图分类号:  (Strongly correlated electron systems; heavy fermions)

  • 71.27.+a
71.28.+d (Narrow-band systems; intermediate-valence solids) 72.20.My (Galvanomagnetic and other magnetotransport effects)