TY - JOUR
T1 - Extrinsic-intrinsic crossover of the spin Hall effect induced by alloying
AU - Musha, Akira
AU - Kanno, Yusuke
AU - Ando, Kazuya
N1 - Funding Information:
This work was supported by JSPS KAKENHI Grants No. 26220604, No. 26103004, the Asahi Glass Foundation, JGC-S Scholarship Foundation, and Spintronics Research Network of Japan (Spin-RNJ).
Publisher Copyright:
© 2019 American Physical Society.
PY - 2019/5/28
Y1 - 2019/5/28
N2 - We report the observation of the crossover between the extrinsic and intrinsic spin Hall effect induced by alloying. We found that the spin Hall angle, the ratio of the spin Hall conductivity to the electric conductivity, changes drastically by tuning the composition of the Au-Cu alloy. The spin Hall angle changes sign only in a limited range of the Cu concentration due to the extrinsic skew scattering, while the intrinsic contribution becomes dominant with increasing Cu concentration. This observation provides essential information for a fundamental understanding of spin-orbit physics.
AB - We report the observation of the crossover between the extrinsic and intrinsic spin Hall effect induced by alloying. We found that the spin Hall angle, the ratio of the spin Hall conductivity to the electric conductivity, changes drastically by tuning the composition of the Au-Cu alloy. The spin Hall angle changes sign only in a limited range of the Cu concentration due to the extrinsic skew scattering, while the intrinsic contribution becomes dominant with increasing Cu concentration. This observation provides essential information for a fundamental understanding of spin-orbit physics.
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U2 - 10.1103/PhysRevMaterials.3.054411
DO - 10.1103/PhysRevMaterials.3.054411
M3 - Article
AN - SCOPUS:85066784985
SN - 2475-9953
VL - 3
JO - Physical Review Materials
JF - Physical Review Materials
IS - 5
M1 - 054411
ER -