Quantifying interface and bulk contributions to spin-orbit torque in magnetic bilayers

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dc.contributor.authorFan, Xinko
dc.contributor.authorCelik, Haliseko
dc.contributor.authorWu, Junko
dc.contributor.authorNi, Chaoyingko
dc.contributor.authorLee, Kyung-Jinko
dc.contributor.authorLorenz, Virginia O.ko
dc.contributor.authorXiao, John Q.ko
dc.date.accessioned2020-11-23T06:50:19Z-
dc.date.available2020-11-23T06:50:19Z-
dc.date.created2020-11-18-
dc.date.issued2014-01-
dc.identifier.citationNATURE COMMUNICATIONS, v.5-
dc.identifier.issn2041-1723-
dc.identifier.urihttp://hdl.handle.net/10203/277473-
dc.description.abstractSpin-orbit interaction-driven phenomena such as the spin Hall and Rashba effect in ferromagnetic/heavy metal bilayers enables efficient manipulation of the magnetization via electric current. However, the underlying mechanism for the spin-orbit interaction-driven phenomena remains unsettled. Here we develop a sensitive spin-orbit torque magnetometer based on the magneto-optic Kerr effect that measures the spin-orbit torque vectors for cobalt iron boron/platinum bilayers over a wide thickness range. We observe that the Slonczewski-like torque inversely scales with the ferromagnet thickness, and the field-like torque has a threshold effect that appears only when the ferromagnetic layer is thinner than 1 nm. Through a thickness-dependence study with an additional copper insertion layer at the interface, we conclude that the dominant mechanism for the spin-orbit interaction-driven phenomena in this system is the spin Hall effect. However, there is also a distinct interface contribution, which may be because of the Rashba effect.-
dc.languageEnglish-
dc.publisherNATURE PUBLISHING GROUP-
dc.titleQuantifying interface and bulk contributions to spin-orbit torque in magnetic bilayers-
dc.typeArticle-
dc.identifier.wosid000331083800025-
dc.identifier.scopusid2-s2.0-84892176862-
dc.type.rimsART-
dc.citation.volume5-
dc.citation.publicationnameNATURE COMMUNICATIONS-
dc.identifier.doi10.1038/ncomms4042-
dc.contributor.localauthorLee, Kyung-Jin-
dc.contributor.nonIdAuthorFan, Xin-
dc.contributor.nonIdAuthorCelik, Halise-
dc.contributor.nonIdAuthorWu, Jun-
dc.contributor.nonIdAuthorNi, Chaoying-
dc.contributor.nonIdAuthorLorenz, Virginia O.-
dc.contributor.nonIdAuthorXiao, John Q.-
dc.description.isOpenAccessN-
dc.type.journalArticleArticle-
dc.subject.keywordPlusEFFECTIVE-FIELD-
dc.subject.keywordPlusDOMAIN-WALLS-
dc.subject.keywordPlusANISOTROPY-
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