Interfacial mechanism in the anomalous Hall effect of Co/Bi2O3 bilayers

Edurne Sagasta; Juan Borge; Luis Esteban; Yasutomo Omori; Martin Gradhand; YoshiChika Otani; Luis E. Hueso; Fèlix Casanova

doi:10.1103/PhysRevB.100.100407

Interfacial mechanism in the anomalous Hall effect of Co/Bi2O3 bilayers

Edurne Sagasta, Juan Borge, Luis Esteban, Yasutomo Omori, Martin Gradhand, YoshiChika Otani, Luis E. Hueso, Fèlix Casanova

School of Physics

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Abstract

Oxide interfaces are a source of spin-orbit coupling which can lead to novel spin-to-charge conversion effects. In this work the contribution of the Bi2O3 interface to the anomalous Hall effect of Co is experimentally studied in Co/Bi2O3 bilayers. We evidence a variation of 40% in the AHE of Co when a Bi2O3 capping layer is added to the ferromagnet. This strong variation is attributed to an additional source of asymmetric transport in Co/Bi2O3 bilayers that originates from the Co/Bi2O3 interface and contributes to the skew scattering.

Original language	English
Article number	100407
Number of pages	5
Journal	Physical Review B
Volume	100
DOIs	https://doi.org/10.1103/PhysRevB.100.100407
Publication status	Published - 18 Sept 2019

Keywords

cond-mat.mes-hall

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@article{d695081a1e2d416cba4c5a98526e4118,

title = "Interfacial mechanism in the anomalous Hall effect of Co/Bi2O3 bilayers",

abstract = " Oxide interfaces are a source of spin-orbit coupling which can lead to novel spin-to-charge conversion effects. In this work the contribution of the Bi2O3 interface to the anomalous Hall effect of Co is experimentally studied in Co/Bi2O3 bilayers. We evidence a variation of 40% in the AHE of Co when a Bi2O3 capping layer is added to the ferromagnet. This strong variation is attributed to an additional source of asymmetric transport in Co/Bi2O3 bilayers that originates from the Co/Bi2O3 interface and contributes to the skew scattering. ",

keywords = "cond-mat.mes-hall",

author = "Edurne Sagasta and Juan Borge and Luis Esteban and Yasutomo Omori and Martin Gradhand and YoshiChika Otani and Hueso, {Luis E.} and F{\`e}lix Casanova",

year = "2019",

month = sep,

day = "18",

doi = "10.1103/PhysRevB.100.100407",

language = "English",

volume = "100",

journal = "Physical Review B",

issn = "2469-9950",

publisher = "American Physical Society (APS)",

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T1 - Interfacial mechanism in the anomalous Hall effect of Co/Bi2O3 bilayers

AU - Sagasta, Edurne

AU - Borge, Juan

AU - Esteban, Luis

AU - Omori, Yasutomo

AU - Gradhand, Martin

AU - Otani, YoshiChika

AU - Hueso, Luis E.

AU - Casanova, Fèlix

PY - 2019/9/18

Y1 - 2019/9/18

N2 - Oxide interfaces are a source of spin-orbit coupling which can lead to novel spin-to-charge conversion effects. In this work the contribution of the Bi2O3 interface to the anomalous Hall effect of Co is experimentally studied in Co/Bi2O3 bilayers. We evidence a variation of 40% in the AHE of Co when a Bi2O3 capping layer is added to the ferromagnet. This strong variation is attributed to an additional source of asymmetric transport in Co/Bi2O3 bilayers that originates from the Co/Bi2O3 interface and contributes to the skew scattering.

AB - Oxide interfaces are a source of spin-orbit coupling which can lead to novel spin-to-charge conversion effects. In this work the contribution of the Bi2O3 interface to the anomalous Hall effect of Co is experimentally studied in Co/Bi2O3 bilayers. We evidence a variation of 40% in the AHE of Co when a Bi2O3 capping layer is added to the ferromagnet. This strong variation is attributed to an additional source of asymmetric transport in Co/Bi2O3 bilayers that originates from the Co/Bi2O3 interface and contributes to the skew scattering.

KW - cond-mat.mes-hall

U2 - 10.1103/PhysRevB.100.100407

DO - 10.1103/PhysRevB.100.100407

M3 - Article (Academic Journal)

SN - 2469-9950

VL - 100

JO - Physical Review B

JF - Physical Review B

M1 - 100407

ER -

Interfacial mechanism in the anomalous Hall effect of Co/Bi2O3 bilayers

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