Relation between spin Hall effect and anomalous Hall effect in 3d ferromagnetic metals

Yasutomo Omori; Edurne Sagasta; Yasuhiro Niimi; Martin Gradhand; Luis E. Hueso; Fèlix Casanova; Yoshichika Otani

doi:10.1103/PhysRevB.99.014403

Relation between spin Hall effect and anomalous Hall effect in 3d ferromagnetic metals

Yasutomo Omori, Edurne Sagasta, Yasuhiro Niimi, Martin Gradhand, Luis E. Hueso, Fèlix Casanova, Yoshichika Otani

School of Physics

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Abstract

We study the mechanisms of the spin Hall effect (SHE) and anomalous Hall effect (AHE) in 3d ferromagnetic metals (Fe, Co, permalloy (Ni81Fe19; Py), and Ni) by varying their resistivities and temperature. At low temperatures where the phonon scattering is negligible, the skew scattering coefficients of the SHE and AHE in Py are related to its spin polarization. However, this simple relation breaks down for Py at higher temperatures as well as for the other ferromagnetic metals at any temperature. We find that, in general, the relation between the SHE and AHE is more complex, with the temperature dependence of the SHE being much stronger than that of AHE.

Original language	English
Article number	014403
Number of pages	6
Journal	Physical Review B
Volume	99
Issue number	1
Early online date	3 Jan 2019
DOIs	https://doi.org/10.1103/PhysRevB.99.014403
Publication status	Published - 3 Jan 2019

Keywords

cond-mat.mes-hall
cond-mat.mtrl-sci

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10.1103/PhysRevB.99.014403

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title = "Relation between spin Hall effect and anomalous Hall effect in 3d ferromagnetic metals",

abstract = "We study the mechanisms of the spin Hall effect (SHE) and anomalous Hall effect (AHE) in 3d ferromagnetic metals (Fe, Co, permalloy (Ni81Fe19; Py), and Ni) by varying their resistivities and temperature. At low temperatures where the phonon scattering is negligible, the skew scattering coefficients of the SHE and AHE in Py are related to its spin polarization. However, this simple relation breaks down for Py at higher temperatures as well as for the other ferromagnetic metals at any temperature. We find that, in general, the relation between the SHE and AHE is more complex, with the temperature dependence of the SHE being much stronger than that of AHE. ",

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T1 - Relation between spin Hall effect and anomalous Hall effect in 3d ferromagnetic metals

AU - Omori, Yasutomo

AU - Sagasta, Edurne

AU - Niimi, Yasuhiro

AU - Gradhand, Martin

AU - Hueso, Luis E.

AU - Casanova, Fèlix

AU - Otani, Yoshichika

PY - 2019/1/3

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N2 - We study the mechanisms of the spin Hall effect (SHE) and anomalous Hall effect (AHE) in 3d ferromagnetic metals (Fe, Co, permalloy (Ni81Fe19; Py), and Ni) by varying their resistivities and temperature. At low temperatures where the phonon scattering is negligible, the skew scattering coefficients of the SHE and AHE in Py are related to its spin polarization. However, this simple relation breaks down for Py at higher temperatures as well as for the other ferromagnetic metals at any temperature. We find that, in general, the relation between the SHE and AHE is more complex, with the temperature dependence of the SHE being much stronger than that of AHE.

AB - We study the mechanisms of the spin Hall effect (SHE) and anomalous Hall effect (AHE) in 3d ferromagnetic metals (Fe, Co, permalloy (Ni81Fe19; Py), and Ni) by varying their resistivities and temperature. At low temperatures where the phonon scattering is negligible, the skew scattering coefficients of the SHE and AHE in Py are related to its spin polarization. However, this simple relation breaks down for Py at higher temperatures as well as for the other ferromagnetic metals at any temperature. We find that, in general, the relation between the SHE and AHE is more complex, with the temperature dependence of the SHE being much stronger than that of AHE.

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KW - cond-mat.mtrl-sci

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DO - 10.1103/PhysRevB.99.014403

M3 - Article (Academic Journal)

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JF - Physical Review B

SN - 2469-9950

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ER -

Relation between spin Hall effect and anomalous Hall effect in 3d ferromagnetic metals

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Dr Martin Gradhand

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Relation between spin Hall effect and anomalous Hall effect in 3d ferromagnetic metals

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Dr Martin Gradhand

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