Spin-current coherence peak in superconductor/magnet junctions

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

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6 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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  • Cite this

    Umeda, M., Shiomi, Y., Kikkawa, T., Niizeki, T., Lustikova, J., Takahashi, S., & Saitoh, E. (2018). Spin-current coherence peak in superconductor/magnet junctions. Applied Physics Letters, 112(23), [232601]. https://doi.org/10.1063/1.5027456