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RESEARCH PRODUCT

Colloquium: Nonequilibrium effects in superconductors with a spin-splitting field

F. Sebastian BergeretPauli VirtanenTero T. HeikkiläMikhail Silaev

subject

---General Physics and AstronomyLibrary scienceFOS: Physical sciences02 engineering and technologysuperconductors01 natural sciences7. Clean energysuprajohteetSuperconductivity (cond-mat.supr-con)Spin splitting0103 physical sciencesMesoscale and Nanoscale Physics (cond-mat.mes-hall)media_common.cataloged_instanceEuropean union010306 general physicskvanttifysiikkamedia_commonPhysicsCondensed Matter - Mesoscale and Nanoscale PhysicsCondensed Matter - SuperconductivityEuropean research021001 nanoscience & nanotechnologyquantum physicsCondensed Matter::Strongly Correlated Electrons0210 nano-technology

description

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.

10.1103/revmodphys.90.041001http://hdl.handle.net/10261/177770