Rashba spin-orbit coupling induced rectified currents in monolayer graphene with exchange field and sublattice potential  

作　　者：陈亮 李峰 丁晓明 Liang Chen;Feng Li;Xiao-Ming Ding(School of Physics and Electronic Engineering,Taishan University,Taian 271000,China)

机构地区：[1]School of Physics and Electronic Engineering,Taishan University,Taian 271000,China

出　　处：《Chinese Physics B》2023年第8期382-385,共4页中国物理B（英文版）

基　　金：Project supported by the Shandong Province Natural Science Foundation(Grant No.ZR2021MF077)。

摘　　要：We investigate the effect of Rashba spin-orbit coupling(RSOC)on photoconductivities of rectified currents in monolayer graphene with exchange field and sublattice potential.The system shows that the photoconductivities of resonant shift and injection current contributions are nonzero,while the photoconductivities of non-resonant shift current contribution are zero.We find that the RSOC induces a warping term,which leads to the nonzero rectified currents.Moreover,the photoconductivities of resonant injection(shift)current contribution are(not)related to the relaxation rate.The similar behavior can be found in other Dirac materials,and our findings provide a way to tune the nonlinear transport properties of Dirac materials.

关 键 词：GRAPHENE spin orbit coupling shift current inject current 

分 类 号：O469[理学—凝聚态物理]