DC Field | Value | Language |
---|---|---|
dc.contributor.author | Park, Eun-Sang | ko |
dc.contributor.author | Lee, Dong-Kyu | ko |
dc.contributor.author | Xue, Fei | ko |
dc.contributor.author | Min, Byoung-Chul | ko |
dc.contributor.author | Koo, Hyun Cheol | ko |
dc.contributor.author | Haney, Paul M. | ko |
dc.contributor.author | Kim, Kyoung-Whan | ko |
dc.contributor.author | Lee, Kyung-Jin | ko |
dc.date.accessioned | 2023-03-13T05:00:10Z | - |
dc.date.available | 2023-03-13T05:00:10Z | - |
dc.date.created | 2023-03-13 | - |
dc.date.created | 2023-03-13 | - |
dc.date.issued | 2023-02 | - |
dc.identifier.citation | PHYSICAL REVIEW B, v.107, no.6 | - |
dc.identifier.issn | 2469-9950 | - |
dc.identifier.uri | http://hdl.handle.net/10203/305569 | - |
dc.description.abstract | The symmetry of normal metal/ferromagnet bilayers allows spin-orbit torques (SOTs) to simultaneously have two distinct angular dependences on the magnetization direction <SIC>m. The most well-studied forms of SOT consist of the conventional fieldlike and dampinglike torques, which we label as "lowest-order" SOT. There are additional SOT forms associated with spin polarization different from that of the lowest-order SOT, and which contain an extra factor of m<SIC> dependence. We label these as "higher-order" SOT. Understanding SOT-driven magnetization dynamics requires detailed information about the full angular dependence. In this paper, we measure both the lowest-order and higher-order angular dependences of SOTs in three types of bilayers, Pt/Co, Ta/CoFeB, and W/CoFeB, using harmonic Hall measurements. It is found that the higher-order SOT is negligible for Pt/Co and Ta/CoFeB, whereas it is dominant over the lowest-order one for W/CoFeB. Macrospin simulations show that the higher-order SOT can significantly affect the magnetization dynamics, which is qualitatively in line with SOT-induced switching experiments. | - |
dc.language | English | - |
dc.publisher | AMER PHYSICAL SOC | - |
dc.title | Strong higher-order angular dependence of spin-orbit torque in W/CoFeB bilayer | - |
dc.type | Article | - |
dc.identifier.wosid | 000931987700003 | - |
dc.identifier.scopusid | 2-s2.0-85148420461 | - |
dc.type.rims | ART | - |
dc.citation.volume | 107 | - |
dc.citation.issue | 6 | - |
dc.citation.publicationname | PHYSICAL REVIEW B | - |
dc.identifier.doi | 10.1103/PhysRevB.107.064411 | - |
dc.contributor.localauthor | Lee, Kyung-Jin | - |
dc.contributor.nonIdAuthor | Park, Eun-Sang | - |
dc.contributor.nonIdAuthor | Lee, Dong-Kyu | - |
dc.contributor.nonIdAuthor | Xue, Fei | - |
dc.contributor.nonIdAuthor | Min, Byoung-Chul | - |
dc.contributor.nonIdAuthor | Koo, Hyun Cheol | - |
dc.contributor.nonIdAuthor | Haney, Paul M. | - |
dc.contributor.nonIdAuthor | Kim, Kyoung-Whan | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | CURRENT-DRIVEN DYNAMICS | - |
dc.subject.keywordPlus | PERPENDICULAR MAGNETIZATION | - |
dc.subject.keywordPlus | LOW-POWER | - |
dc.subject.keywordPlus | SYMMETRY | - |
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