Evidence for Dyakonov-Perel-like Spin Relaxation in Pt

Physical Review Letters
Ryan FreemanSergei Urazhdin

Abstract

We utilize nanoscale spin valves with Pt spacer layers to characterize spin relaxation in Pt. Analysis of the spin lifetime indicates that Elliott-Yafet spin scattering is dominant at room temperature, but an unexpected intrinsic Dyakonov-Perel-like spin relaxation becomes dominant at cryogenic temperatures. We also observe suppression of spin relaxation in a Pt layer interfaced with a ferromagnet, likely caused by the competition between the effective exchange and spin-orbit fields.

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Citations

Jul 26, 2018·Nature Communications·Tom S SeifertTobias Kampfrath
Mar 14, 2020·Physical Review Letters·Kriti GuptaPaul J Kelly

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