Colloquium : Nonequilibrium effects in superconductors with a spin-splitting field
Bergeret, F. Sebastian; Silaev, Mikhail; Virtanen, Pauli; Heikkilä, Tero (2018). Colloquium : Nonequilibrium effects in superconductors with a spin-splitting field. Reviews of Modern Physics, 90 (4), 041001. DOI: 10.1103/RevModPhys.90.041001
Published inReviews of Modern Physics
© 2018 American Physical Society
This Colloquium discusses the recent progress in understanding the properties of spin-split superconductors under nonequilibrium conditions. Recent experiments and theories demonstrate a rich variety of transport phenomena occurring in devices based on such materials that suggest direct applications in thermoelectricity, low-dissipative spintronics, radiation detection, and sensing. This text discusses different experimental situations and presents a theoretical framework based on quantum kinetic equations. This framework provides an accurate description of the nonequilibrium distribution of charge, spin, and energy, which are the relevant nonequilibrium modes, in different hybrid structures. This Colloquium also reviews experiments on spin-split superconductors and shows how transport measurements reveal the properties of the nonequilibrium modes and their mutual coupling. In particular, the emphasis of the text is on spin injection and diffusion and very large thermoelectric effects in spin-split superconductors. ...
PublisherAmerican Physical Society
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Related funder(s)Academy of Finland
Funding program(s)Centre of Excellence, AoF; Research post as Academy Research Fellow, AoF; Others, AoF
Additional information about fundingWe thank Faluke Aikebaier, Marco Aprili, Detlef Beckmann, Wolfgang Belzig, Alexander Bobkov, Irina Bobkova, Matthias Eschrig, Yuri Galperin, Francesco Giazotto, Vitaly Golovach, Kalle Kansanen, Alexander Mel’nikov, Jagadeesh Moodera, Risto Ojajärvi, Asier Ozaeta, Charis Quay, Jason Robinson, Mikel Rouco, and Elia Strambini for useful discussions. This work was supported by the Academy of Finland Center of Excellence (Project No. 284594), Research Fellow (Project No. 297439), and Key Funding (Project No. 305256) programs, the Spanish Ministerio de Economía y Competitividad (MINECO, Project No. FIS2014-55987-P), the Spanish Ministerio de Ciencia, Innovación y Universidades (MICINN, Project No. FIS2017-82804-P), and the European Research Council under the European Union’s Seventh Framework Program (FP7/2007-2013)/ERC Grant agreements No. 240362-HEATTRONICS and No. 615187-COMANCHE. ...
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