Universal features of spin transport and breaking of unitary symmetries

Ph Jacquod, I. Adagideli

Research output: Contribution to journalArticleAcademicpeer-review

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When time-reversal symmetry is broken, quantum coherent systems with and without spin rotational symmetry exhibit the same universal behavior in their electric transport properties. We show that spin transport discriminates between these two cases. In systems with large charge conductance, spin transport is essentially insensitive to the breaking of time-reversal symmetry. However, in the opposite limit of a single exit channel, spin currents vanish identically in the presence of time-reversal symmetry, but are turned on by breaking it with an orbital magnetic field.
Original languageEnglish
Article number041305(R)
JournalPhysical Review B (Condensed Matter and Materials Physics)
Issue number4
Publication statusPublished - 15 Jul 2013
Externally publishedYes


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