Detection and in situ switching of unreversed interfacial antiferromagnetic spins in a perpendicular-exchange-biased system

Shiratsuchi, Yu; Noutomi, Hayato; Oikawa, Hiroto; Nakamura, Tetsuya; Suzuki, Motohiro; Fujita, Toshiaki; Arakawa, Kazuto; Takechi, Yuichiro; Mori, Hirotaro; Kinoshita, Toyohiko; Yamamoto, Masahiko; Nakatani, Ryoichi

doi:https://doi.org/10.1103/PhysRevLett.109.077202

Detection and in situ switching of unreversed interfacial antiferromagnetic spins in a perpendicular-exchange-biased system

Shiratsuchi, Yu; Noutomi, Hayato; Oikawa, Hiroto et al.

Physical Review Letters, 2012, 109(7), 077202

アクセス数:208件（2025-03-14 18:33 集計）

固定URL: https://hdl.handle.net/11094/89978

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タイトル	Detection and in situ switching of unreversed interfacial antiferromagnetic spins in a perpendicular-exchange-biased system
著者	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 Noutomi, Hayato
	著者名 Oikawa, Hiroto
	NRID 1000070311355 1000070311355 著者名 Nakamura, Tetsuya
	NRID 1000060443553 1000060443553 著者名 Suzuki, Motohiro
	著者名 Fujita, Toshiaki
	NRID 1000030294367 1000030294367 著者名 Arakawa, Kazuto
	著者名 Takechi, Yuichiro
	NRID 1000010024366 1000010024366 著者名 Mori, Hirotaro
	NRID 1000060202040 1000060202040 著者名 Kinoshita, Toyohiko
	NRID 1000030029160 1000030029160 著者名 Yamamoto, Masahiko
	NRID 1000060314374 1000060314374 researchmap permalink read0068619 read0068619 Scopus Author ID 7005234924 7005234924 著者名 Nakatani, Ryoichi
内容	Y.Shiratsuchi, H.Noutomi, H.Oikawa, et al. Detection and in situ switching of unreversed interfacial antiferromagnetic spins in a perpendicular-exchange-biased system. Physical Review Letters 109, 077202 (2012); https://doi.org/10.1103/PhysRevLett.109.077202.
抄録	By using the perpendicular-exchange-biased Pt/Co/α-Cr₂O₃ system, we provide experimental evidence that the unreversed uncompensated Cr spins exist at the Co/α-Cr₂O₃ interface. The unreversed uncompensated Cr spin manifests itself in both the vertical shift of an element-specific magnetization curve and the relative peak intensity of soft-x-ray magnetic circular dichroism spectrum. We also demonstrate an in situ switching of the interfacial Cr spins and correspondingly a reversal of the exchange bias without interfacial atomic diffusion. Such switching shows the direct relationship between the interfacial antiferromagnetic spins and origin of the exchange bias. The demonstrated switching of exchange bias would likely offer a new design of advanced spintronics devices, using the perpendicular-exchange-biased system, with low power consumption and ultrafast operation.
出版者	American Physical Society
収録物名	Physical Review Letters
巻(号)	109(7)
ページ	077202
刊行年月	2012-08-16
言語	英語
ハンドルURL	https://hdl.handle.net/11094/89978
PISSN	00319007
eISSN	10797114
NCID	AA00773679
関連情報 (isIdenticalTo)	DOI (出版社版) https://doi.org/10.1103/PhysRevLett.109.077202
アクセス権	open access
権利情報	Copyright 2012 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 Letters. 2012, 109(7), p. 077202
DC.title	Detection and in situ switching of unreversed interfacial antiferromagnetic spins in a perpendicular-exchange-biased system
DC.creator	Shiratsuchi, Yu
	Noutomi, Hayato
	Oikawa, Hiroto
	Nakamura, Tetsuya
	Suzuki, Motohiro
	Fujita, Toshiaki
	Arakawa, Kazuto
	Takechi, Yuichiro
	Mori, Hirotaro
	Kinoshita, Toyohiko
	Yamamoto, Masahiko
	Nakatani, Ryoichi
DC.publisher	American Physical Society
DC.language' scheme='DCTERMS.RFC1766	英語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2012-08-16
DC.identifier	https://doi.org/10.1103/PhysRevLett.109.077202
DC.description	Y.Shiratsuchi, H.Noutomi, H.Oikawa, et al. Detection and in situ switching of unreversed interfacial antiferromagnetic spins in a perpendicular-exchange-biased system. Physical Review Letters 109, 077202 (2012); https://doi.org/10.1103/PhysRevLett.109.077202.
DCTERMS.abstract	By using the perpendicular-exchange-biased Pt/Co/α-Cr₂O₃ system, we provide experimental evidence that the unreversed uncompensated Cr spins exist at the Co/α-Cr₂O₃ interface. The unreversed uncompensated Cr spin manifests itself in both the vertical shift of an element-specific magnetization curve and the relative peak intensity of soft-x-ray magnetic circular dichroism spectrum. We also demonstrate an in situ switching of the interfacial Cr spins and correspondingly a reversal of the exchange bias without interfacial atomic diffusion. Such switching shows the direct relationship between the interfacial antiferromagnetic spins and origin of the exchange bias. The demonstrated switching of exchange bias would likely offer a new design of advanced spintronics devices, using the perpendicular-exchange-biased system, with low power consumption and ultrafast operation.
DC.rights	Copyright 2012 by the American Physical Society
DC.format	89978
citation_title	Detection and in situ switching of unreversed interfacial antiferromagnetic spins in a perpendicular-exchange-biased system
citation_author	Shiratsuchi, Yu
	Noutomi, Hayato
	Oikawa, Hiroto
	Nakamura, Tetsuya
	Suzuki, Motohiro
	Fujita, Toshiaki
	Arakawa, Kazuto
	Takechi, Yuichiro
	Mori, Hirotaro
	Kinoshita, Toyohiko
	Yamamoto, Masahiko
	Nakatani, Ryoichi
citation_publisher	American Physical Society
citation_language	英語
citation_date	2012-08-16
citation_journal_title	Physical Review Letters
citation_volume	109
citation_issue	7
citation_firstpage	077202
citation_doi	https://doi.org/10.1103/PhysRevLett.109.077202
citation_public_url	https://hdl.handle.net/11094/89978

Detection and in situ switching of unreversed interfacial antiferromagnetic spins in a perpendicular-exchange-biased system

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