Chen, Son-HsienSon-HsienChenChang, Ching-RayChing-RayChang2010-10-202018-06-282010-10-202018-06-282008-12http://ntur.lib.ntu.edu.tw//handle/246246/217740en-USNon-Abelian spin-orbit gauge: Persistent spin helix and quantum square ring10.1103/PhysRevB.77.045324WOS:000252863100094