Unconventional angular dependence of spin-orbit torque-induced harmonic Hall resistance in Pt/YIG bilayers

Unconventional angular dependence of spin-orbit torque-induced harmonic Hall resistance in Pt/YIG bilayers | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article Unconventional angular dependence of spin-orbit torque-induced harmonic Hall resistance in Pt/YIG bilayers Byong-Guk Park, Takayuki Shiino, Cao Van Phuoc, Jong-Guk Choi, and 2 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4117261/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 11 You are reading this latest preprint version Abstract Spin orbit torque (SOT), arising from spin-orbit coupling-induced spin currents, provides efficient control of the magnetization direction. SOT characterization that involves analyzing the first and second harmonic Hall resistances are typically done in a low-current regime, distinct from a high-current regime, where SOT-induced magnetization switching occurs. In this study, we investigate the azimuthal angle ( ϕ )-dependent harmonic Hall resistances of a Pt/yttrium iron garnet (YIG) layer across a wide range of measurement currents. Under low-current conditions, conventional ϕ-dependent Hall resistances are observed; the first harmonic Hall resistance exhibits sin⁡2 ϕ behavior and the second harmonic Hall resistance comprises cos⁡ ϕ and cos⁡3 ϕ terms, associated with damping-like and field-like SOT, respectively. Interestingly, with an increase in the current, higher-order angular-dependent terms become non-negligible, referring to the sin⁡4 ϕ and sin⁡6 ϕ terms for the first harmonic and the cos⁡5 ϕ and cos⁡7 ϕ terms for the second harmonic Hall resistances. We attribute this unconventional angular dependence to the nonlinear current dependence of SOT, emphasizing its relevance to understand the magnetization dynamics during SOT-induced switching under large currents. Physical sciences/Materials science/Condensed matter physics/Spintronics Physical sciences/Physics/Condensed matter physics/Ferromagnetism Full Text Additional Declarations No competing interests reported. Supplementary Files SMfinal.docx Cite Share Download PDF Status: Under Review Version 1 posted Editorial decision: Revision requested 09 May, 2024 Reviews received at journal 30 Apr, 2024 Reviews received at journal 27 Apr, 2024 Reviewers agreed at journal 16 Apr, 2024 Reviews received at journal 03 Apr, 2024 Reviewers agreed at journal 26 Mar, 2024 Reviewers agreed at journal 22 Mar, 2024 Reviewers invited by journal 22 Mar, 2024 Editor assigned by journal 21 Mar, 2024 Submission checks completed at journal 20 Mar, 2024 First submitted to journal 17 Mar, 2024 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-4117261","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":282450087,"identity":"1f2c8d68-e238-4513-9766-11824a2347b5","order_by":0,"name":"Byong-Guk 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SOT characterization that involves analyzing the first and second harmonic Hall resistances are typically done in a low-current regime, distinct from a high-current regime, where SOT-induced magnetization switching occurs. In this study, we investigate the azimuthal angle (\u003cem\u003eϕ\u003c/em\u003e)-dependent harmonic Hall resistances of a Pt/yttrium iron garnet (YIG) layer across a wide range of measurement currents. Under low-current conditions, conventional ϕ-dependent Hall resistances are observed; the first harmonic Hall resistance exhibits sin⁡2\u003cem\u003eϕ\u003c/em\u003e behavior and the second harmonic Hall resistance comprises cos⁡\u003cem\u003eϕ\u003c/em\u003e and cos⁡3\u003cem\u003eϕ\u003c/em\u003e terms, associated with damping-like and field-like SOT, respectively. 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We attribute this unconventional angular dependence to the nonlinear current dependence of SOT, emphasizing its relevance to understand the magnetization dynamics during SOT-induced switching under large currents.\u0026nbsp;\u003c/p\u003e","manuscriptTitle":"Unconventional angular dependence of spin-orbit torque-induced harmonic Hall resistance in Pt/YIG bilayers","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2024-03-22 06:08:46","doi":"10.21203/rs.3.rs-4117261/v1","editorialEvents":[{"type":"communityComments","content":0},{"type":"decision","content":"Revision requested","date":"2024-05-09T20:14:15+00:00","index":"","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2024-04-30T07:50:46+00:00","index":"hide","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2024-04-27T15:08:09+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"3de04b4a-2d9d-4bf3-a30a-22ba0773af07","date":"2024-04-17T03:42:51+00:00","index":"hide","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2024-04-03T09:01:41+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"390408c2-b383-4ddb-bf73-b0f3c88e6a31","date":"2024-03-26T06:32:41+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"9ec2c5e9-831a-4d05-b96b-79959ae4b2a0","date":"2024-03-22T19:16:01+00:00","index":"hide","fulltext":""},{"type":"reviewersInvited","content":"","date":"2024-03-22T09:40:13+00:00","index":"","fulltext":""},{"type":"editorAssigned","content":"","date":"2024-03-21T23:37:41+00:00","index":"","fulltext":""},{"type":"checksComplete","content":"","date":"2024-03-20T07:16:12+00:00","index":"","fulltext":""},{"type":"submitted","content":"npj Spintronics","date":"2024-03-17T13:40:02+00:00","index":"","fulltext":""}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"npj-spintronics","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"","sideBox":"Learn more about [npj Spintronics](https://www.nature.com/npjspintronics/)","snPcode":"44306","submissionUrl":"https://submission.springernature.com/new-submission/44306/3","title":"npj Spintronics","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"stoa","reportingPortfolio":"NPJ","inReviewEnabled":true,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"920d6df5-f437-4a88-8b6d-41d97cced1ec","owner":[],"postedDate":"March 22nd, 2024","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"under-review","subjectAreas":[{"id":29740677,"name":"Physical sciences/Materials science/Condensed matter physics/Spintronics"},{"id":29740678,"name":"Physical sciences/Physics/Condensed matter physics/Ferromagnetism"}],"tags":[],"updatedAt":"2024-07-22T11:36:41+00:00","versionOfRecord":[],"versionCreatedAt":"2024-03-22 06:08:46","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-4117261","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-4117261","identity":"rs-4117261","version":["v1"]},"buildId":"qtupq5eGEP_6zYnWcrvyt","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}