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

作　　者：Wenye Duan Junfeng Liu Chao Zhang Zhongshui Ma 段文晔;刘军丰;张潮;马中水(School of Physics,Peking University,Beijing 100871,China;School of Physics,University of Wollongong,New South Wales 2522,Australia;Department of Physics,South University of Science and Technology of China,Shenzhen 518055,China 4Collaborative Innovation Center of Quantum Matter,Beijing 100871,China)

机构地区：[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

出　　处：《Chinese Physics B》2018年第9期504-511,共8页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.11274013 and 11774006);the National Basic Research Program of China(2012CB921300);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.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 

分 类 号：TQ127.11[化学工程—无机化工]