Yingzhi Ye, Xiaolei Song, Zhanhui Yuan, Jun Wang, Bingwen Zhang
{"title":"Intrinsic valley polarization and anomalous valley Hall effect in monolayer H-ScAt2","authors":"Yingzhi Ye, Xiaolei Song, Zhanhui Yuan, Jun Wang, Bingwen Zhang","doi":"10.1016/j.physe.2023.115879","DOIUrl":null,"url":null,"abstract":"<p>Materials with spontaneous polarization is very promising in valley electronics because of its potential application in encoding and storing information. In this paper, we proposed a stable two-dimensional ferromagnetic valley material <span><math><mi is=\"true\">H</mi></math></span>-ScAt<span><math><msub is=\"true\"><mrow is=\"true\"></mrow><mrow is=\"true\"><mn is=\"true\">2</mn></mrow></msub></math></span><span> which can spontaneously generate valley splitting and exhibit intrinsic anomalous Hall effect<span>. The valley polarization is 0.245 eV, which is large than most of the reported materials. The structural stability is verified by our phonon<span><span> and molecular dynamic calculation. The </span>Curie temperature of </span></span></span><span><math><mi is=\"true\">H</mi></math></span>-ScAt<span><math><msub is=\"true\"><mrow is=\"true\"></mrow><mrow is=\"true\"><mn is=\"true\">2</mn></mrow></msub></math></span> monolayer is about 840 K, which is above room temperature.</p>","PeriodicalId":20078,"journal":{"name":"Physica E: Low-dimensional Systems and Nanostructures","volume":"30 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physica E: Low-dimensional Systems and Nanostructures","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1016/j.physe.2023.115879","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Materials with spontaneous polarization is very promising in valley electronics because of its potential application in encoding and storing information. In this paper, we proposed a stable two-dimensional ferromagnetic valley material -ScAt which can spontaneously generate valley splitting and exhibit intrinsic anomalous Hall effect. The valley polarization is 0.245 eV, which is large than most of the reported materials. The structural stability is verified by our phonon and molecular dynamic calculation. The Curie temperature of -ScAt monolayer is about 840 K, which is above room temperature.
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