中国物理B ›› 2018, Vol. 27 ›› Issue (9): 97204-097204.doi: 10.1088/1674-1056/27/9/097204

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

The magneto-thermoelectric effect of graphene with intra-valley scattering

Wenye Duan(段文晔), Junfeng Liu(刘军丰), Chao Zhang(张潮), Zhongshui Ma(马中水)   

  1. 1 School of Physics, Peking University, Beijing 100871, China;
    2 School of Physics, University of Wollongong, New South Wales 2522, Australia;
    3 Department of Physics, South University of Science and Technology of China, Shenzhen 518055, China;
    4 Collaborative Innovation Center of Quantum Matter, Beijing 100871, China
  • 收稿日期:2018-05-12 修回日期:2018-06-25 出版日期:2018-09-05 发布日期:2018-09-05
  • 通讯作者: Wenye Duan E-mail:duanwy@pku.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11274013 and 11774006), the National Basic Research Program of China (2012CB921300), and the Australian Research Council Grant (Grant No. DP160101474).

The magneto-thermoelectric effect of graphene with intra-valley scattering

Wenye Duan(段文晔)1,2, Junfeng Liu(刘军丰)3, Chao Zhang(张潮)2, Zhongshui Ma(马中水)1,4   

  1. 1 School of Physics, Peking University, Beijing 100871, China;
    2 School of Physics, University of Wollongong, New South Wales 2522, Australia;
    3 Department of Physics, South University of Science and Technology of China, Shenzhen 518055, China;
    4 Collaborative Innovation Center of Quantum Matter, Beijing 100871, China
  • Received:2018-05-12 Revised:2018-06-25 Online:2018-09-05 Published:2018-09-05
  • Contact: Wenye Duan E-mail:duanwy@pku.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11274013 and 11774006), the National Basic Research Program of China (2012CB921300), and the Australian Research Council Grant (Grant No. DP160101474).

摘要:

We present a qualitative and quantitative study of the magneto-thermoelectric effect of graphene. In the limit of impurity scattering length being much longer than the lattice constant, the intra-valley scattering dominates the charge and thermal transport. The self-energy and the Green's functions are calculated in the self-consistent Born approximation. It is found that the longitudinal thermal conductivity splits into double peaks at high Landau levels and exhibits oscillations which are out of phase with the electric conductivity. The chemical potential-dependent electrical resistivity, the thermal conductivities, the Seebeck coefficient, and the Nernst coefficient are obtained. The results are in good agreement with the experimental observations.

关键词: graphene, thermoelectric transport, thermal transport

Abstract:

We present a qualitative and quantitative study of the magneto-thermoelectric effect of graphene. In the limit of impurity scattering length being much longer than the lattice constant, the intra-valley scattering dominates the charge and thermal transport. The self-energy and the Green's functions are calculated in the self-consistent Born approximation. It is found that the longitudinal thermal conductivity splits into double peaks at high Landau levels and exhibits oscillations which are out of phase with the electric conductivity. The chemical potential-dependent electrical resistivity, the thermal conductivities, the Seebeck coefficient, and the Nernst coefficient are obtained. The results are in good agreement with the experimental observations.

Key words: graphene, thermoelectric transport, thermal transport

中图分类号:  (Electronic transport in graphene)

  • 72.80.Vp
72.15.Jf (Thermoelectric and thermomagnetic effects) 73.50.Lw (Thermoelectric effects)