Tuning Out-of-Plane Spin Polarization Using in-Plane Magnetic Fields in a Quasi-One-Dimensional Quantum Wire Embedded in (110) Plane
SUN Jin-Fang1**, CHENG Fang2
1The State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083 2Department of Physics and Electronic Science, Changsha University of Science and Technology, Changsha 410004
Abstract：We investigate theoretically the combination effect of an in-plane magnetic field and spin-orbit interactions (SOIs) on the spin and charge transport property of a quasi-one-dimensional quantum wire embedded in the (110) crystallographic plane. We find that the oscillations of the conductance induced by the SOIs become more significant and different for the spin-up and spin-down electrons in the presence of the in-plane magnetic field. The conductance exhibits a significant anisotropic behavior and electrons exhibit out-of-plane spin polarization which can be tuned by an in-plane magnetic field. These features offer us an efficient way to control SOI-induced spin transport using in-plane magnetic fields.
2014, Vol. 31 
