Enhanced Spin Conductance of a Thin-Film Insulating Antiferromagnet
dc.contributor.author | Bender, Scott A. | |
dc.contributor.author | Skarsvåg, Hans Langva | |
dc.contributor.author | Brataas, Arne | |
dc.contributor.author | Duine, R A | |
dc.date.accessioned | 2018-01-04T13:13:10Z | |
dc.date.available | 2018-01-04T13:13:10Z | |
dc.date.created | 2017-10-18T16:45:36Z | |
dc.date.issued | 2017 | |
dc.identifier.issn | 0031-9007 | |
dc.identifier.uri | http://hdl.handle.net/11250/2475710 | |
dc.description.abstract | We investigate spin transport by thermally excited spin waves in an antiferromagnetic insulator. Starting from a stochastic Landau-Lifshitz-Gilbert phenomenology, we obtain the out-of-equilibrium spin-wave properties. In linear response to spin biasing and a temperature gradient, we compute the spin transport through a normal-metal–antiferromagnet–normal-metal heterostructure. We show that the spin conductance diverges as one approaches the spin-flop transition; this enhancement of the conductance should be readily observable by sweeping the magnetic field across the spin-flop transition. The results from such experiments may, on the one hand, enhance our understanding of spin transport near a phase transition, and on the other be useful for applications that require a large degree of tunability of spin currents. In contrast, the spin Seebeck coefficient does not diverge at the spin-flop transition. Furthermore, the spin Seebeck coefficient is finite even at zero magnetic field, provided that the normal metal contacts break the symmetry between the antiferromagnetic sublattices. | nb_NO |
dc.language.iso | eng | nb_NO |
dc.publisher | American Physical Society | nb_NO |
dc.title | Enhanced Spin Conductance of a Thin-Film Insulating Antiferromagnet | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | nb_NO |
dc.description.version | publishedVersion | nb_NO |
dc.source.journal | Physical Review Letters | nb_NO |
dc.identifier.doi | 10.1103/PhysRevLett.119.056804 | |
dc.identifier.cristin | 1505695 | |
dc.description.localcode | © 2017 American Physical Society | nb_NO |
cristin.unitcode | 194,66,20,0 | |
cristin.unitname | Institutt for fysikk | |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.qualitycode | 2 |
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