摘要
A spin-polarized current direction controller scheme is proposed based on a nonuniform Rashba quantum wire. It is shown that |P_(z)^(LR)|=|P_(z)^(RL)|, whereas their signs are opposite, and the effect of this phenomenon is due to the two broken symmetries and the unbroken C_(2)-rotation symmetry of the investigated system. In addition, the spin-polarized current is nonzero even with a strong disorder strength, which demonstrates that this structure may be utilized for potential applications.
作者
XU Zhong-Hui
XIAO Wen
CHEN Yu-Guang
徐中辉;肖文;陈宇光(Department of Physics,Tongji University,Shanghai 200092;Faculty of Information Engineering,Jiangxi University of Science and Technology,Ganzhou 341000)
基金
the National Natural Science Foundation of China under Grant No 11247207
the Research Foundation of Jiangxi Education Department under Grant Nos GJJ12355 and GJJ13383
the Natural Science Foundation of Jiangxi Province under Grant No 20122BAB212004.
