L Alff , A Marx , R Gross , A Beck , H Takashima , S Kashiwaya , M Koyanagi , Y Tanaka
{"title":"高温超导体的隧穿光谱","authors":"L Alff , A Marx , R Gross , A Beck , H Takashima , S Kashiwaya , M Koyanagi , Y Tanaka","doi":"10.1016/S0964-1807(99)00042-3","DOIUrl":null,"url":null,"abstract":"<div><p>We have performed tunneling spectroscopy experiments on different kinds of high-temperature superconductors (HTS) and different types of junctions. Firstly, spectra were taken on surfaces of YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-<em>δ</em></sub><span> (YBCO) thin films and Nd</span><sub>1.85</sub>Ce<sub>0.15</sub>CuO<sub>4-<em>y</em></sub><span> (NCCO) single crystals by low-temperature scanning tunneling microscopy/spectroscopy (LTSTM/S) in a superconductor-insulator-normal metal (SIN) configuration. Second, the tunneling spectra of grain-boundary junctions (GBJs) fabricated on bicrystal substrates were measured for the materials YBCO, La</span><sub>1.85</sub>Sr<sub>0.15</sub>CuO<sub>4-<em>δ</em></sub> (LSCO), Bi<sub>2</sub>Sr<sub>2</sub>CaCu<sub>2</sub>O<sub>8+<em>δ</em></sub><span> (BSCCO) and NCCO in a SIS configuration. The characteristics of the spectra in both systems could be related to the symmetry of the order parameter in the superconducting electrode(s). In particular, a zero bias conductance peak (ZBCP) was observed only in systems with a d-wave symmetry, but was completely absent in the s-wave system NCCO.</span></p></div>","PeriodicalId":100110,"journal":{"name":"Applied Superconductivity","volume":"6 10","pages":"Pages 783-787"},"PeriodicalIF":0.0000,"publicationDate":"1999-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0964-1807(99)00042-3","citationCount":"2","resultStr":"{\"title\":\"Tunneling spectroscopy of high-Tc superconductors\",\"authors\":\"L Alff , A Marx , R Gross , A Beck , H Takashima , S Kashiwaya , M Koyanagi , Y Tanaka\",\"doi\":\"10.1016/S0964-1807(99)00042-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>We have performed tunneling spectroscopy experiments on different kinds of high-temperature superconductors (HTS) and different types of junctions. Firstly, spectra were taken on surfaces of YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-<em>δ</em></sub><span> (YBCO) thin films and Nd</span><sub>1.85</sub>Ce<sub>0.15</sub>CuO<sub>4-<em>y</em></sub><span> (NCCO) single crystals by low-temperature scanning tunneling microscopy/spectroscopy (LTSTM/S) in a superconductor-insulator-normal metal (SIN) configuration. Second, the tunneling spectra of grain-boundary junctions (GBJs) fabricated on bicrystal substrates were measured for the materials YBCO, La</span><sub>1.85</sub>Sr<sub>0.15</sub>CuO<sub>4-<em>δ</em></sub> (LSCO), Bi<sub>2</sub>Sr<sub>2</sub>CaCu<sub>2</sub>O<sub>8+<em>δ</em></sub><span> (BSCCO) and NCCO in a SIS configuration. The characteristics of the spectra in both systems could be related to the symmetry of the order parameter in the superconducting electrode(s). In particular, a zero bias conductance peak (ZBCP) was observed only in systems with a d-wave symmetry, but was completely absent in the s-wave system NCCO.</span></p></div>\",\"PeriodicalId\":100110,\"journal\":{\"name\":\"Applied Superconductivity\",\"volume\":\"6 10\",\"pages\":\"Pages 783-787\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1999-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/S0964-1807(99)00042-3\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Superconductivity\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0964180799000423\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Superconductivity","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0964180799000423","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
We have performed tunneling spectroscopy experiments on different kinds of high-temperature superconductors (HTS) and different types of junctions. Firstly, spectra were taken on surfaces of YBa2Cu3O7-δ (YBCO) thin films and Nd1.85Ce0.15CuO4-y (NCCO) single crystals by low-temperature scanning tunneling microscopy/spectroscopy (LTSTM/S) in a superconductor-insulator-normal metal (SIN) configuration. Second, the tunneling spectra of grain-boundary junctions (GBJs) fabricated on bicrystal substrates were measured for the materials YBCO, La1.85Sr0.15CuO4-δ (LSCO), Bi2Sr2CaCu2O8+δ (BSCCO) and NCCO in a SIS configuration. The characteristics of the spectra in both systems could be related to the symmetry of the order parameter in the superconducting electrode(s). In particular, a zero bias conductance peak (ZBCP) was observed only in systems with a d-wave symmetry, but was completely absent in the s-wave system NCCO.
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