Bias-induced circular spin current: Effects of environmental dephasing and disorder

Authors

Moumita Patra, Indian Statistical Institute, Kolkata
Santanu K. Maiti, Indian Statistical Institute, Kolkata

Article Type

Research Article

Publication Title

Physical Review B

Abstract

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.

DOI

10.1103/PhysRevB.100.165408

Publication Date

10-8-2019

Comments

Open Access, Green

Recommended Citation

Patra, Moumita and Maiti, Santanu K., "Bias-induced circular spin current: Effects of environmental dephasing and disorder" (2019). Journal Articles. 659.
https://digitalcommons.isical.ac.in/journal-articles/659