Orbital magnetic phase and pure persistent spin current in spin-orbit coupling mesoscopic rings
Abstract
By solving the Rashba model of mesoscopic rings, we give analytically the ground-state properties of the ring, including the spin polarization, the persistent charge and spin currents (PCC and PSC). These ground-state properties can be given based on four kinds of electron numbers in rings. The effect of the self-inductance of the ring leads to the self-sustained magnetic flux (SSMF) and the self-sustained PCC and PSC, which break spontaneously time-reversal symmetry to form orbital magnetic phase (OMP). To tune the spin-orbit coupling strength or electron number of the ring can induce the phase transition between the OMP and non-OMP. For exact one-dimensional rings we find the coexistence of the pure PSC and SSMF. This property of the pure PSC may provide a new scheme to measure the pure PSC.
Keywords
Cite
@article{arxiv.1503.04274,
title = {Orbital magnetic phase and pure persistent spin current in spin-orbit coupling mesoscopic rings},
author = {Guang-Yao Huang and Shi-Dong Liang},
journal= {arXiv preprint arXiv:1503.04274},
year = {2015}
}
Comments
7 pages, 2 figures