Universal features of spin transport and breaking of unitary symmetries
| Autor: | İnanç Adagideli, Ph. Jacquod |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Physics
Condensed Matter - Mesoscale and Nanoscale Physics Spin polarization Condensed matter physics Spontaneous symmetry breaking FOS: Physical sciences Condensed Matter Physics Electronic Optical and Magnetic Materials Explicit symmetry breaking QC Physics Spin wave Quantum mechanics Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Spin Hall effect QC176-176.9 Solids. Solid state physics Symmetry breaking Chiral symmetry breaking Doublet state |
| Zdroj: | Physical Review B. 88 |
| ISSN: | 1550-235X 1098-0121 |
| DOI: | 10.1103/physrevb.88.041305 |
| Popis: | 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. Comment: Final version, 5 pages, 3 figures in main text; supplemental material added |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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