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

Abstract

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

13 pages, 3 figures

References in corpus (3)

• Observation of intrinsic inverse spin Hall effect
• Unconventional Fermi surface spin textures in the Bi_xPb_{1-x}/Ag(111) surface alloy
• Spin relaxation characteristics in Ag nanowire covered with various oxides

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