Giant Anomalous Hall Conductivity at the Pt/Cr₂O₃ Interface

Moriyama, Takahiro; Shiratsuchi, Yu; Iino, Tatsuya; Aono, Hikaru; Suzuki, Motohiro; Nakamura, Tetsuya; Kotani, Yoshinori; Nakatani, Ryoichi; Nakamura, Kohji; Ono, Teruo

doi:https://doi.org/10.1103/PhysRevApplied.13.034052

Giant Anomalous Hall Conductivity at the Pt/Cr₂O₃ Interface

Moriyama, Takahiro; Shiratsuchi, Yu; Iino, Tatsuya et al.

Physical Review Applied, 2020, 13(3), 034052

アクセス数:913件（2025-07-26 22:20 集計）

固定URL: https://hdl.handle.net/11094/89963

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タイトル	Giant Anomalous Hall Conductivity at the Pt/Cr₂O₃ Interface
著者	NRID 1000050643326 1000050643326 著者名 Moriyama, Takahiro
	NRID 1000070379121 1000070379121 ORCID 0000-0002-8938-4869 0000-0002-8938-4869 researchmap permalink read0090304 read0090304 Scopus Author ID 6602197167 6602197167 著者名 Shiratsuchi, Yu
	著者名 Iino, Tatsuya
	著者名 Aono, Hikaru
	NRID 1000060443553 1000060443553 著者名 Suzuki, Motohiro
	NRID 1000070311355 1000070311355 著者名 Nakamura, Tetsuya
	NRID 1000010596464 1000010596464 著者名 Kotani, Yoshinori
	NRID 1000060314374 1000060314374 researchmap permalink read0068619 read0068619 Scopus Author ID 7005234924 7005234924 著者名 Nakatani, Ryoichi
	NRID 1000070281847 1000070281847 著者名 Nakamura, Kohji
	NRID 1000090296749 1000090296749 著者名 Ono, Teruo
内容	T.Moriyama, Y.Shiratsuchi, T.Iino, et al. Giant Anomalous Hall Conductivity at the Pt/Cr₂O₃ Interface. Physical Review Applied 13, 034052 (2020); https://doi.org/10.1103/PhysRevApplied.13.034052.
抄録	The interface between a magnetic material and a heavy metal that has a large spin-orbit interaction is at the root of various spin-related phenomena. In this paper, we address the peculiar spin-dependent transport at a Pt/Cr₂O₃ interface by exploring the origin of the nonlinear anomalous Hall effect (AHE) in Pt/Cr₂O₃ bilayers. X-ray magnetic circular dichroism (XMCD) measurements show no appreciable magnetic moment at the interface originating from Cr 3d and Pt 5d orbitals, which could be associated with the AHE response. A possible interfacial magnetic moment M at the Pt/Cr₂O₃ interface, assumed from the detection limit of the XMCD measurements, yields an anomalous Hall conductivity (σAHE) per unit net magnetic moment (M),-σAHE/M, of 0.57 V-1, which is extraordinary large compared with that for general magnetic materials. Together with first-principles calculations, the results suggest the possibility of an intrinsic AHE in the Pt/Cr₂O₃ interface that does not rely on the net magnetic moment.
出版者	American Physical Society
収録物名	Physical Review Applied
巻(号)	13(3)
ページ	034052
刊行年月	2020-03-20
言語	英語
ハンドルURL	https://hdl.handle.net/11094/89963
eISSN	23317019
関連情報 (isIdenticalTo)	DOI (出版社版) https://doi.org/10.1103/PhysRevApplied.13.034052
アクセス権	open access
権利情報	Copyright 2020 by the American Physical Society
出版タイプ	Version of Record
カテゴリ	学術雑誌論文 Journal Article

資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
DCMI資源タイプ	text
DCTERMS.bibliographicCitation	Physical Review Applied. 2020, 13(3), p. 034052
DC.title	Giant Anomalous Hall Conductivity at the Pt/Cr₂O₃ Interface
DC.creator	Moriyama, Takahiro
	Shiratsuchi, Yu
	Iino, Tatsuya
	Aono, Hikaru
	Suzuki, Motohiro
	Nakamura, Tetsuya
	Kotani, Yoshinori
	Nakatani, Ryoichi
	Nakamura, Kohji
	Ono, Teruo
DC.publisher	American Physical Society
DC.language' scheme='DCTERMS.RFC1766	英語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2020-03-20
DC.identifier	https://doi.org/10.1103/PhysRevApplied.13.034052
DC.description	T.Moriyama, Y.Shiratsuchi, T.Iino, et al. Giant Anomalous Hall Conductivity at the Pt/Cr₂O₃ Interface. Physical Review Applied 13, 034052 (2020); https://doi.org/10.1103/PhysRevApplied.13.034052.
DCTERMS.abstract	The interface between a magnetic material and a heavy metal that has a large spin-orbit interaction is at the root of various spin-related phenomena. In this paper, we address the peculiar spin-dependent transport at a Pt/Cr₂O₃ interface by exploring the origin of the nonlinear anomalous Hall effect (AHE) in Pt/Cr₂O₃ bilayers. X-ray magnetic circular dichroism (XMCD) measurements show no appreciable magnetic moment at the interface originating from Cr 3d and Pt 5d orbitals, which could be associated with the AHE response. A possible interfacial magnetic moment M at the Pt/Cr₂O₃ interface, assumed from the detection limit of the XMCD measurements, yields an anomalous Hall conductivity (σAHE) per unit net magnetic moment (M),-σAHE/M, of 0.57 V-1, which is extraordinary large compared with that for general magnetic materials. Together with first-principles calculations, the results suggest the possibility of an intrinsic AHE in the Pt/Cr₂O₃ interface that does not rely on the net magnetic moment.
DC.rights	Copyright 2020 by the American Physical Society
DC.format	89963
citation_title	Giant Anomalous Hall Conductivity at the Pt/Cr₂O₃ Interface
citation_author	Moriyama, Takahiro
	Shiratsuchi, Yu
	Iino, Tatsuya
	Aono, Hikaru
	Suzuki, Motohiro
	Nakamura, Tetsuya
	Kotani, Yoshinori
	Nakatani, Ryoichi
	Nakamura, Kohji
	Ono, Teruo
citation_publisher	American Physical Society
citation_language	英語
citation_date	2020-03-20
citation_journal_title	Physical Review Applied
citation_volume	13
citation_issue	3
citation_firstpage	034052
citation_doi	https://doi.org/10.1103/PhysRevApplied.13.034052
citation_public_url	https://hdl.handle.net/11094/89963

Giant Anomalous Hall Conductivity at the Pt/Cr₂O₃ Interface

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