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

Abstract

Analogous to circular spin current in an isolated quantum loop, bias induced spin circular current can also be generated under certain physical conditions in a nanojunction having single and/or multiple loop geometries which we propose first time, to the best of our concern, considering a magnetic quantum system. The key aspect of our work is the development of a suitable theory for defining and analyzing circular spin current in presence of environmental dephasing and impurities. Unlike transport current in a conducting junction, circular current may enhance significantly in presence of disorder and phase randomizing processes. Our analysis provides a new spin dependent phenomenon, and can give important signatures in designing suitable spintronic devices as well as selective spin regulations.

arXiv commentThoroughly revised and extended version. Accepted for publication in Physical Review B

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Cited by in corpus (5)

• Quantum interference and the time-dependent radiation of nanojunctions
• Non-volatile reconfigurable spin logic device: parallel operations
• Transport characteristics of a $\mathcal{P}\mathcal{T}$-symmetric non-Hermitian system: Effect of environmental interaction
• Spin half-adder
• Effect of spin-orbit interaction on circular current: Pure spin current phenomena within a ring conductor