Experimental observation of spin-to-charge current conversion at non-magnetic metal/Bi2O3 interfaces

Shutaro Karube, Kouta Kondou, Yoshi Chika Otani

Research output: Contribution to journalArticlepeer-review

55 Citations (Scopus)


Here, we demonstrate interfacial spin-to-charge current conversion by means of spin pumping from a ferromagnetic permalloy (Py: Ni80Fe20) to a Cu/Bi2O3 interface. A clear peak owing to the spin-to-charge current conversion was observed in the voltage spectrum of a Py/Cu/Bi2O3 trilayer film, whereas no peak was observed in Py/Cu and Py/Bi2O3 bilayer films. We also found that the conversion coefficient strongly depended on the Cu thickness, reflecting the thickness-dependent momentum relaxation time for the Cu layer.

Original languageEnglish
Article number033001
JournalApplied Physics Express
Issue number3
Publication statusPublished - 2016 Mar
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


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