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- W1967364909 abstract "Recently, a positive spin Hall angle (SHA) of 0.021 was observed experimentally in nonmagnetic CuIr alloys [Niimi et al, Phys. Rev. Lett. 106, 126601 (2011)] and attributed predominantly to an extrinsic skew scattering mechanism, while a negative SHA was obtained from ab initio calculations [Fedorov et al, Phys. Rev. B 88, 085116 (2013)], using consistent definitions of the SHA. We reconsider the SHA in CuIr alloys, with the effects of the local electron correlation $U$ in $5d$ orbitals of Ir impurities, included by the quantum Monte Carlo method. We found that the SHA is negative if we ignore such local electron correlation, but becomes positive once $U$ approaches a realistic value. This may open up a way to control the sign of the SHA by manipulating the occupation number of impurities." @default.
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- W1967364909 date "2015-01-06" @default.
- W1967364909 modified "2023-09-25" @default.
- W1967364909 title "Sign Change of the Spin Hall Effect due to Electron Correlation in Nonmagnetic CuIr Alloys" @default.
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- W1967364909 doi "https://doi.org/10.1103/physrevlett.114.017202" @default.
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