Spin-current coherence peak in superconductor/magnet junctions

Maki Umeda, Yuki Shiomi, Takashi Kikkawa, Tomohiko Niizeki, Jana Lustikova, Saburo Takahashi, Eiji Saitoh

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Coherence 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 Y3Fe5O12 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.

Original languageEnglish
Article number232601
JournalApplied Physics Letters
Volume112
Issue number23
DOIs
Publication statusPublished - 2018 Jun 4

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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