Bias-induced circular spin current: Effects of environmental dephasing and disorder
Physical Review B
Analogous to circular spin current in an isolated quantum loop, bias-induced circular spin current can also be generated under certain physical conditions in a nanojunction having single- and/or multiple-loop geometries which we propose considering a magnetic quantum system. The key aspect of our work is the development of a suitable theory for defining and analyzing circular spin currents in presence of environmental dephasing and impurities. Unlike a transport current in a conducting junction, a circular current may enhance significantly in presence of disorder and phase randomizing processes. Our analysis provides a spin-dependent phenomenon, and can give important signatures in designing suitable spintronic devices as well as selective spin regulations.
Patra, Moumita and Maiti, Santanu K., "Bias-induced circular spin current: Effects of environmental dephasing and disorder" (2019). Journal Articles. 659.