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29 March 2024
 
  » arxiv » 1801.7943

 Article overview


Spin-current coherence peak in superconductor/magnet junctions
Maki Umeda ; Yuki Shiomi ; Takashi Kikkawa ; Tomohiko Niizeki ; Jana Lustikova ; Saburo Takahashi ; Eiji Saitoh ;
Date 24 Jan 2018
AbstractCoherence peak effects in a superconductor induced by a thermal spin current are reported. We measured inverse spin Hall effects induced by spin injection from a ferrimagnetic insulator Y$_3$Fe$_5$O$_{12}$ into a superconductor NbN using longitudinal spin Seebeck effects. In the vicinity of the superconducting transition temperature of the NbN, a large enhancement of the spin Seebeck voltage is observed, whose sign is opposite to that for the vortex Nernst effect, but is consistent with a calculation for a coherence peak effect in the superconductor NbN.
Source arXiv, 1801.7943
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