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arXiv · 1707.05330

Intrinsic and extrinsic contributions to spin scattering in Pt

Ryan Freeman·Andrei Zholud·Zhiling Dun·Haidong Zhou·Sergei Urazhdin
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Abstract

We utilize nanoscale spin valves with Pt spacer layers to characterize spin scattering in Pt. Analysis of the spin lifetime determined from our measurements indicates that the extrinsic Elliot-Yafet spin scattering is dominant at room temperature, while the intrinsic Dyakonov-Perel mechanism dominates at cryogenic temperatures. The significance of the latter is supported by the suppression of spin relaxation in Pt layers interfaced with a ferromagnet, likely caused by the competition between the effective exchange and spin-orbit fields.

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Ryan Freeman, Andrei Zholud, Zhiling Dun, Haidong Zhou, Sergei Urazhdin. 2017-07-17. Intrinsic and extrinsic contributions to spin scattering in Pt. https://doi.org/10.1103/physrevlett.120.067204

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