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Published on: May 29, 2018
Observation of the D'yakonov-Perel' Spin Relaxation in Single-Crystalline Pt Thin Films
Jeongchun Ryu1, Makoto Kohda1, Junsaku Nitta1
1Department of Materials Science, Tohoku University, Sendai 980-8579, Japan.
Abstract:
The spin relaxation mechanism in single-crystalline and polycrystalline platinum (Pt) thin films is revealed by a quantum interference effect. Examining the relationship between the spin relaxation rate and momentum scattering rate by changing Pt thickness, we find that the spin relaxation rate of Pt strongly depends on both crystal structure and thickness even though the quality of material (Pt) is unchanged. In particular, the D'yakonov-Perel' mechanism is considered as a dominant mechanism under cases where scattering events are suppressed or the interface effect is not negligible.
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