Spin pumping into superconductors: A new probe of spin dynamics in a superconducting thin film

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Spin pumping refers to the microwave-driven spin current injection from a ferromagnet into the adjacent target material. We theoretically investigate the spin pumping into superconductors by fully taking account of impurity spin-orbit scattering that is indispensable to describe diffusive spin transport with finite spin diffusion length. We calculate temperature dependence of the spin pumping signal and show that a pronounced coherence peak appears immediately below the superconducting transition temperature Tc, which survives even in the presence of the spin-orbit scattering. The phenomenon provides us with a new way of studying the dynamic spin susceptibility in a superconducting thin film. This is contrasted with the nuclear magnetic resonance technique used to study a bulk superconductor.

Original languageEnglish
Article number024414
JournalPhysical Review B
Volume96
Issue number2
DOIs
Publication statusPublished - Jul 12 2017

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Spin dynamics
Superconducting films
spin dynamics
Superconducting materials
pumping
Orbits
Scattering
Pumping (laser)
probes
thin films
Superconducting transition temperature
Microwaves
Nuclear magnetic resonance
Impurities
orbits
Temperature
diffusion length
scattering
transition temperature
injection

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Spin pumping into superconductors : A new probe of spin dynamics in a superconducting thin film. / Inoue, Masashi; Ichioka, Masanori; Adachi, Hiroto.

In: Physical Review B, Vol. 96, No. 2, 024414, 12.07.2017.

Research output: Contribution to journalArticle

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