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Long-Range Spin Accumulation from Heat Injection in Mesoscopic Superconductors with Zeeman Splitting
KTH, School of Engineering Sciences (SCI), Theoretical Physics, Statistical Physics. Aalto University, Finland.
2015 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 114, no 16, 167002Article in journal (Refereed) Published
Abstract [en]

We describe far-from-equilibrium nonlocal transport in a diffusive superconducting wire with a Zeeman splitting, taking into account different spin relaxation mechanisms. We demonstrate that due to the Zeeman splitting, an injection of current in a superconducting wire creates spin accumulation that can only relax via thermalization. This effect leads to a long-range spin accumulation detectable in the nonlocal signal. Our model gives a qualitative explanation and provides accurate fits of recent experimental results in terms of realistic parameters.

Place, publisher, year, edition, pages
2015. Vol. 114, no 16, 167002
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-171696DOI: 10.1103/PhysRevLett.114.167002ISI: 000353330000007PubMedID: 25955071ScopusID: 2-s2.0-84929601111OAI: diva2:844718
EU, European Research Council, 240362-HeattronicsSwedish Research Council, 325-2009-7664Swedish Research Council, 642-2013-7837

QC 20150807

Available from: 2015-08-07 Created: 2015-08-05 Last updated: 2015-08-07Bibliographically approved

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