Pseudospin-filter tunneling of massless Dirac fermions  

作　　者：Zhengdong Li Wen Zeng 李政栋;曾文(Department of Physics,Jiangsu University,Zhenjiang 212013,China)

机构地区：[1]Department of Physics,Jiangsu University,Zhenjiang 212013,China

出　　处：《Chinese Physics B》2024年第11期384-387,共4页中国物理B（英文版）

基　　金：Project supported by the College Student Innovation Project(Grant No.202310299517X);the Scientific Research Project of Jiangsu University(Grant No.22A716).

摘　　要：The tunneling of the massless Dirac fermions through a vector potential barrier are theoretically investigated, wherethe vector potential can be introduced by very high and very thin (d-function) magnetic potential barriers. We showthat, distinct from the previously studied electric barrier tunneling, the vector potential barriers are more transparent forpseudospin-1/2 Dirac fermions but more obstructive for pseudospin-1 Dirac fermions. By tuning the height of the vectorpotential barrier, the pseudospin-1/2 Dirac fermions remain transmitted, whereas the transmission of the pseudospin-1Dirac fermions is forbidden, leading to a pseudospin filtering effect for massless Dirac fermions.

关 键 词：tunneling junction pseudospin filter magnetic barrier 

分 类 号：O413[理学—理论物理] TN713[理学—物理]