{"title":"Spin-orbit torque with spin and orbital generation in Pt, Mn, and Pt0.5Mn0.5","authors":"Sumin Kim, Gyung-Min Choi","doi":"10.1016/j.cap.2024.08.012","DOIUrl":null,"url":null,"abstract":"<div><p>The spin generation in strong spin-orbit coupling systems has led to a large spin-orbit torque. Recently, the orbital generation in weak spin-orbit coupling systems was reported. In this study, we investigate the spin-orbit torque of a nonmagnet/ferromagnet bilayer, where the nonmagnet is Pt, Mn, and Pt<sub>0.5</sub>Mn<sub>0.5</sub> alloy, and the ferromagnet is Fe, Co, and Ni. The highest SOT efficiency, i.e., the spin Hall angle, of 0.32 was achieved with the Pt<sub>0.5</sub>Mn<sub>0.5</sub>/Ni structure, which is three times larger than 0.1 with the Pt/Ni structure. For the SOT mechanism, we discuss the enhanced orbital or spin generation in the PtMn alloy.</p></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"68 ","pages":"Pages 26-30"},"PeriodicalIF":2.4000,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Current Applied Physics","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1567173924001871","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
The spin generation in strong spin-orbit coupling systems has led to a large spin-orbit torque. Recently, the orbital generation in weak spin-orbit coupling systems was reported. In this study, we investigate the spin-orbit torque of a nonmagnet/ferromagnet bilayer, where the nonmagnet is Pt, Mn, and Pt0.5Mn0.5 alloy, and the ferromagnet is Fe, Co, and Ni. The highest SOT efficiency, i.e., the spin Hall angle, of 0.32 was achieved with the Pt0.5Mn0.5/Ni structure, which is three times larger than 0.1 with the Pt/Ni structure. For the SOT mechanism, we discuss the enhanced orbital or spin generation in the PtMn alloy.
期刊介绍：
Current Applied Physics (Curr. Appl. Phys.) is a monthly published international journal covering all the fields of applied science investigating the physics of the advanced materials for future applications.
Other areas covered: Experimental and theoretical aspects of advanced materials and devices dealing with synthesis or structural chemistry, physical and electronic properties, photonics, engineering applications, and uniquely pertinent measurement or analytical techniques.
Current Applied Physics, published since 2001, covers physics, chemistry and materials science, including bio-materials, with their engineering aspects. It is a truly interdisciplinary journal opening a forum for scientists of all related fields, a unique point of the journal discriminating it from other worldwide and/or Pacific Rim applied physics journals.
Regular research papers, letters and review articles with contents meeting the scope of the journal will be considered for publication after peer review.
The Journal is owned by the Korean Physical Society.
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