Transport Properties of Two-Dimensional Electron Gases in Antiparallel Magnetic-Electric Barrier Structures  

作　　者：PING Yun-Xia CHENG Ze 

机构地区：Department of Physics, Huazhong University of Science and Technology, Wuhan 430074, China

出　　处：《Communications in Theoretical Physics》2006年第2X期348-352,共5页理论物理通讯（英文版）

基　　金：The project supported by National Natural Science Foundation of China under Grant Nos. 19847004 and 10474025.

摘　　要：We study theoretically transport properties of two-dimenslonal electron gases through antiparallel magneticelectric barrier structures. Two kinds of magnetic barrier configurations are employed： one is that the strength of the double δ-functlon in opposite directions is equal and the other is that the strength is unequal Similarities and differences of electronic transports are presented. It is found that the transmission and the conductance depend strongly on the shape of the magnetic barrier and the height of the electric harrier. The results indicate that this system does not possess any spin filtering and spin polarization and electron gases can realize perfect resonant tunneling and wave-vector filtering properties. Moreover, the strength of the effect of the inhomogeneous magnetic field on the transport properties is discussed.

关 键 词：magnetic-electric barrier resonant tunneling wave-vector filtering TRANSMISSION CONDUCTANCE 

分 类 号：O562[理学—原子与分子物理]