Universal scaling behavior of the upper critical field in strained FeSe0.7Te0.3 thin films
Revealing the universal behaviors of iron-based superconductors (FBS) is important to elucidate the microscopic theory of superconductivity. In this work, we investigate the effect of in-plane strain on the slope of the upper critical field H _c2 at the superconducting transition temperature T _c (i...
| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2018-01-01
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| Series: | New Journal of Physics |
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| Online Access: | https://doi.org/10.1088/1367-2630/aade66 |
| _version_ | 1827873292593135616 |
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| author | Feifei Yuan Vadim Grinenko Kazumasa Iida Stefan Richter Aurimas Pukenas Werner Skrotzki Masahito Sakoda Michio Naito Alberto Sala Marina Putti Aichi Yamashita Yoshihiko Takano Zhixiang Shi Kornelius Nielsch Ruben Hühne |
| author_facet | Feifei Yuan Vadim Grinenko Kazumasa Iida Stefan Richter Aurimas Pukenas Werner Skrotzki Masahito Sakoda Michio Naito Alberto Sala Marina Putti Aichi Yamashita Yoshihiko Takano Zhixiang Shi Kornelius Nielsch Ruben Hühne |
| author_sort | Feifei Yuan |
| collection | DOAJ |
| description | Revealing the universal behaviors of iron-based superconductors (FBS) is important to elucidate the microscopic theory of superconductivity. In this work, we investigate the effect of in-plane strain on the slope of the upper critical field H _c2 at the superconducting transition temperature T _c (i.e. −d H _c2 /d T ) for FeSe _0.7 Te _0.3 thin films. The in-plane strain tunes T _c in a broad range, while the composition and disorder are almost unchanged. We show that −d H _c2 /d T scales linearly with T _c , indicating that FeSe _0.7 Te _0.3 follows the same universal behavior as observed for pnictide FBS. The observed behavior is consistent with a multiband superconductivity paired by interband interaction such as sign change s _± superconductivity. |
| first_indexed | 2024-03-12T16:36:06Z |
| format | Article |
| id | doaj.art-0c864489215748c78fc178436de83ea5 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:36:06Z |
| publishDate | 2018-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-0c864489215748c78fc178436de83ea52023-08-08T14:52:46ZengIOP PublishingNew Journal of Physics1367-26302018-01-0120909301210.1088/1367-2630/aade66Universal scaling behavior of the upper critical field in strained FeSe0.7Te0.3 thin filmsFeifei Yuan0Vadim Grinenko1Kazumasa Iida2https://orcid.org/0000-0003-1038-9630Stefan Richter3Aurimas Pukenas4Werner Skrotzki5Masahito Sakoda6Michio Naito7https://orcid.org/0000-0002-7581-889XAlberto Sala8Marina Putti9Aichi Yamashita10Yoshihiko Takano11Zhixiang Shi12Kornelius Nielsch13Ruben Hühne14https://orcid.org/0000-0002-0030-6048School of Physics and Key Laboratory of MEMS of the Ministry of Education, Southeast University , Nanjing 211189, People’s Republic of China; Institute for Metallic Materials, IFW Dresden, D-01171 Dresden, GermanyInstitute for Metallic Materials, IFW Dresden, D-01171 Dresden, Germany; Institute for Solid State and Materials Physics, TU Dresden, D-01069 Dresden, GermanyDepartment of Materials Physics, Graduate School of Engineering, Nagoya University , Nagoya 464-8603, JapanInstitute for Metallic Materials, IFW Dresden, D-01171 Dresden, Germany; Institute for Solid State and Materials Physics, TU Dresden, D-01069 Dresden, GermanyInstitute for Solid State and Materials Physics, TU Dresden, D-01069 Dresden, GermanyInstitute for Solid State and Materials Physics, TU Dresden, D-01069 Dresden, GermanyDepartment of Applied Physics, Tokyo University of Agriculture and Technology , Koganei, Tokyo 184-8588, JapanDepartment of Applied Physics, Tokyo University of Agriculture and Technology , Koganei, Tokyo 184-8588, JapanDipartimento di Fisica, Università di Genova and CNR-SPIN , Via Dodecaneso 33, I-16146 Genova, ItalyDipartimento di Fisica, Università di Genova and CNR-SPIN , Via Dodecaneso 33, I-16146 Genova, ItalyNational Institute for Materials Science (NIMS), Tsukuba, Ibaraki, 305-0047, JapanNational Institute for Materials Science (NIMS), Tsukuba, Ibaraki, 305-0047, JapanSchool of Physics and Key Laboratory of MEMS of the Ministry of Education, Southeast University , Nanjing 211189, People’s Republic of ChinaInstitute for Metallic Materials, IFW Dresden, D-01171 Dresden, GermanyInstitute for Metallic Materials, IFW Dresden, D-01171 Dresden, GermanyRevealing the universal behaviors of iron-based superconductors (FBS) is important to elucidate the microscopic theory of superconductivity. In this work, we investigate the effect of in-plane strain on the slope of the upper critical field H _c2 at the superconducting transition temperature T _c (i.e. −d H _c2 /d T ) for FeSe _0.7 Te _0.3 thin films. The in-plane strain tunes T _c in a broad range, while the composition and disorder are almost unchanged. We show that −d H _c2 /d T scales linearly with T _c , indicating that FeSe _0.7 Te _0.3 follows the same universal behavior as observed for pnictide FBS. The observed behavior is consistent with a multiband superconductivity paired by interband interaction such as sign change s _± superconductivity.https://doi.org/10.1088/1367-2630/aade66Fe-based superconductorsthin filmupper critical fields |
| spellingShingle | Feifei Yuan Vadim Grinenko Kazumasa Iida Stefan Richter Aurimas Pukenas Werner Skrotzki Masahito Sakoda Michio Naito Alberto Sala Marina Putti Aichi Yamashita Yoshihiko Takano Zhixiang Shi Kornelius Nielsch Ruben Hühne Universal scaling behavior of the upper critical field in strained FeSe0.7Te0.3 thin films New Journal of Physics Fe-based superconductors thin film upper critical fields |
| title | Universal scaling behavior of the upper critical field in strained FeSe0.7Te0.3 thin films |
| title_full | Universal scaling behavior of the upper critical field in strained FeSe0.7Te0.3 thin films |
| title_fullStr | Universal scaling behavior of the upper critical field in strained FeSe0.7Te0.3 thin films |
| title_full_unstemmed | Universal scaling behavior of the upper critical field in strained FeSe0.7Te0.3 thin films |
| title_short | Universal scaling behavior of the upper critical field in strained FeSe0.7Te0.3 thin films |
| title_sort | universal scaling behavior of the upper critical field in strained fese0 7te0 3 thin films |
| topic | Fe-based superconductors thin film upper critical fields |
| url | https://doi.org/10.1088/1367-2630/aade66 |
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