K. Shimura, Y. Daitoh, Y. Yano, T. Terashima, Y. Bandō
{"title":"Microstructures and Superconductivity of Ultrathin YBa₂Cu₃O₇ Films","authors":"K. Shimura, Y. Daitoh, Y. Yano, T. Terashima, Y. Bandō","doi":"10.2497/JJSPM.41.365","DOIUrl":null,"url":null,"abstract":"Superconductivity of 1 unit cell thick (1-UCT) YBa2Cu307 (YBCO) with various oxide cap layers is studied. Capping with BaO layer makes 1-UCT YBCO superconducting. It is revealed that that a formation of BaO-CuO-BaO charge reservoir is of significance for the hole donation in the 1-UCT YBCO. Superconductivity or significant reduction of resistivity implying the formation of the charge reservoir was also observed in 1-UCT YBCO covered with Sr-O, Ca-O, Pb-0, and Cd-O.","PeriodicalId":9502,"journal":{"name":"Bulletin of the Institute for Chemical Research, Kyoto University","volume":"13 1","pages":"502-509"},"PeriodicalIF":0.0000,"publicationDate":"1993-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of the Institute for Chemical Research, Kyoto University","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.2497/JJSPM.41.365","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
Superconductivity of 1 unit cell thick (1-UCT) YBa2Cu307 (YBCO) with various oxide cap layers is studied. Capping with BaO layer makes 1-UCT YBCO superconducting. It is revealed that that a formation of BaO-CuO-BaO charge reservoir is of significance for the hole donation in the 1-UCT YBCO. Superconductivity or significant reduction of resistivity implying the formation of the charge reservoir was also observed in 1-UCT YBCO covered with Sr-O, Ca-O, Pb-0, and Cd-O.
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