dc.contributor.author | Linder, Jacob | |
dc.contributor.author | Bathen, Marianne Etzelmüller | |
dc.date.accessioned | 2017-11-09T09:18:05Z | |
dc.date.available | 2017-11-09T09:18:05Z | |
dc.date.created | 2016-12-14T09:39:45Z | |
dc.date.issued | 2016 | |
dc.identifier.citation | Physical Review B. Condensed Matter and Materials Physics. 2016, 93 (22), . | nb_NO |
dc.identifier.issn | 1098-0121 | |
dc.identifier.uri | http://hdl.handle.net/11250/2465117 | |
dc.description.abstract | It has recently been proposed and experimentally demonstrated that it is possible to generate large thermoelectric effects in ferromagnet/superconductor structures due to a spin-dependent particle-hole asymmetry. Here, we show theoretically that quasiparticle tunneling between two spin-split superconductors enhances the thermoelectric response manyfold compared to when only one such superconductor is used, generating Seebeck coefficients (S>1 mV/K) and figures of merit (ZT≃40) far exceeding the best bulk thermoelectric materials, and it also becomes more resilient toward inelastic-scattering processes. We present a generalized Onsager response-matrix that takes into account spin-dependent voltage and temperature gradients. Moreover, we show that thermally induced spin currents created in such junctions, even in the absence of a polarized tunneling barrier, also become largest in the case in which spin-dependent particle-hole asymmetry exists on both sides of the barrier. We determine how these thermal spin-currents can be tuned both in magnitude and sign by several parameters, including the external field, the temperature, and the superconducting phase difference. | nb_NO |
dc.language.iso | eng | nb_NO |
dc.publisher | American Physical Society | nb_NO |
dc.title | Spin caloritronics with superconductors: Enhanced thermoelectric effects, generalized Onsager response-matrix, and thermal spin currents | nb_NO |
dc.type | Journal article | nb_NO |
dc.description.version | submittedVersion | nb_NO |
dc.source.pagenumber | 7 | nb_NO |
dc.source.volume | 93 | nb_NO |
dc.source.journal | Physical Review B. Condensed Matter and Materials Physics | nb_NO |
dc.source.issue | 22 | nb_NO |
dc.identifier.doi | 10.1103/PhysRevB.93.224509 | |
dc.identifier.cristin | 1412420 | |
dc.description.localcode | © 2016 American Physical Society. This is the authors' manuscript to the article (preprint). | nb_NO |
cristin.unitcode | 194,66,20,0 | |
cristin.unitname | Institutt for fysikk | |
cristin.ispublished | true | |
cristin.fulltext | preprint | |
cristin.qualitycode | 2 | |