Measurement of spin pumping voltage separated from extrinsic microwave effects

Ryo Iguchi, Eiji Saitoh

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)

Abstract

Conversions between spin and charge currents are core technologies in recent spintronics. In this article, we provide methods for estimating inverse spin Hall effects (ISHEs) induced by using microwave-driven spin pumping (SP) as a spin-current generator. ISHE and SP induce an electromotive force at the ferromagnetic or spin-wave resonance, which offers a valuable electric method of studying spin physics in materials. At the resonance, a microwave for exciting the magnetization dynamics induces an additional electromotive force via rf-current rectification and thermoelectric effects. We discuss methods of separating the signals generated from such extrinsic microwave effects by controlling sample structures and configurations. These methods are helpful in performing accurate measurements on ISHE induced by SP, enabling quantitative studies on the conversion between spin and charge currents on various kinds of materials.

Original languageEnglish
Article number011003
Journaljournal of the physical society of japan
Volume86
Issue number1
DOIs
Publication statusPublished - 2017 Jan 15

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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