Persistent spin current in anisotropic spin ring
arXiv:cond-mat/0505547 · doi:10.1016/j.physe.2006.01.012
Abstract
The persistent spin current in anisotropic spin ring penetrated by a SU(2) flux is studied by the Schwinger-boson mean field approach. The anisotropy in spin coupling can facilitate the persistent spin current. Ground-state energy and excitation energy gap are also studied. The peak of spin current occurs at the maximum value of the ground-state energy.
11 pages,6 figures