{"title":"Effect of interface quality on spin Hall magnetoresistance in Pt/MgFe<sub>2</sub>O<sub>4</sub> bilayers","authors":"Masafumi Sugino, Kohei Ueda, Takanori Kida, Masayuki Hagiwara, Jobu MATSUNO","doi":"10.35848/1882-0786/ad0ba4","DOIUrl":null,"url":null,"abstract":"Abstract We report on spin Hall magnetoresistance (SMR) in bilayers composed of Pt and magnetic insulator MgFe 2 O 4 (MFO) with spinel structure. The Pt thickness dependence of the SMR reveals that annealing of the MFO surface before depositing the Pt layer is crucial for a large SMR with better interface quality. We also found that oxygen pressure during the MFO growth hardly affects the SMR while it influences on magnetic property of the MFO film. Our findings provide important clues to further understand the spin transport at interfaces containing magnetic insulators, facilitating development of low power consumption devices.","PeriodicalId":8093,"journal":{"name":"Applied Physics Express","volume":"87 22","pages":"0"},"PeriodicalIF":2.3000,"publicationDate":"2023-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Physics Express","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.35848/1882-0786/ad0ba4","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PHYSICS, APPLIED","Score":null,"Total":0}
引用次数: 0
Abstract
Abstract We report on spin Hall magnetoresistance (SMR) in bilayers composed of Pt and magnetic insulator MgFe 2 O 4 (MFO) with spinel structure. The Pt thickness dependence of the SMR reveals that annealing of the MFO surface before depositing the Pt layer is crucial for a large SMR with better interface quality. We also found that oxygen pressure during the MFO growth hardly affects the SMR while it influences on magnetic property of the MFO film. Our findings provide important clues to further understand the spin transport at interfaces containing magnetic insulators, facilitating development of low power consumption devices.
期刊介绍：
Applied Physics Express (APEX) is a letters journal devoted solely to rapid dissemination of up-to-date and concise reports on new findings in applied physics. The motto of APEX is high scientific quality and prompt publication. APEX is a sister journal of the Japanese Journal of Applied Physics (JJAP) and is published by IOP Publishing Ltd on behalf of the Japan Society of Applied Physics (JSAP).
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