Effects of pressure and magnetic field on superconductivity in ZrTe3: local pair-induced superconductivity
In this work, the origin of the highly anisotropic superconducting transition in ZrTe _3 , where the resistance along the a axis, R _a , is reduced at 4 K but those along the b axis, R _b , and ${c}^{\prime }$ axis, R _c _′ , are reduced at 2 K, was explored with the application of a magnetic field...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2017-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/aa6d48 |
| _version_ | 1797750804182990848 |
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| author | S Tsuchiya K Matsubayashi K Yamaya S Takayanagi S Tanda Y Uwatoko |
| author_facet | S Tsuchiya K Matsubayashi K Yamaya S Takayanagi S Tanda Y Uwatoko |
| author_sort | S Tsuchiya |
| collection | DOAJ |
| description | In this work, the origin of the highly anisotropic superconducting transition in ZrTe _3 , where the resistance along the a axis, R _a , is reduced at 4 K but those along the b axis, R _b , and ${c}^{\prime }$ axis, R _c _′ , are reduced at 2 K, was explored with the application of a magnetic field and pressure by the electrical resistance measurements. We found that the behavior of the upper critical field and its anisotropy as well as the pressure dependence determined by the R _a measurements are quite similar to those of R _b . Moreover, the excess conductivity for R _b indicates anomalous behavior. These results support an unconventional origin for the anisotropic transition rather than conventional superconducting fluctuation. The reduction in R _a is due to filamentary superconductivity (SC) induced by locally bound electron pairs (local pairs), which correspond to bi-polarons, and the transition of R _b corresponds to the emergence of bulk SC originating from the Cooper pairs triggered by the transfer of the local pairs. |
| first_indexed | 2024-03-12T16:38:08Z |
| format | Article |
| id | doaj.art-10f40d3586ad43cd8b71ec21d532da0e |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:38:08Z |
| publishDate | 2017-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-10f40d3586ad43cd8b71ec21d532da0e2023-08-08T14:38:01ZengIOP PublishingNew Journal of Physics1367-26302017-01-0119606300410.1088/1367-2630/aa6d48Effects of pressure and magnetic field on superconductivity in ZrTe3: local pair-induced superconductivityS Tsuchiya0https://orcid.org/0000-0002-8406-5869K Matsubayashi1K Yamaya2S Takayanagi3S Tanda4Y Uwatoko5Department of Applied Physics, Hokkaido University , Sapporo, Hokkaido 060-8628, Japan; Institute for Solid State Physics, The University of Tokyo , Kashiwa, Chiba 277-8581, JapanInstitute for Solid State Physics, The University of Tokyo , Kashiwa, Chiba 277-8581, Japan; Department of Engineering Science, The University of Electro-Communications , Chofu, Tokyo 182-8585, JapanDepartment of Applied Physics, Hokkaido University , Sapporo, Hokkaido 060-8628, JapanDepartment of Applied Physics, Hokkaido University , Sapporo, Hokkaido 060-8628, JapanDepartment of Applied Physics, Hokkaido University , Sapporo, Hokkaido 060-8628, Japan; Center of Education and Research for Topological Science and Technology, Hokkaido University , Sapporo, Hokkaido 060-8628, JapanInstitute for Solid State Physics, The University of Tokyo , Kashiwa, Chiba 277-8581, JapanIn this work, the origin of the highly anisotropic superconducting transition in ZrTe _3 , where the resistance along the a axis, R _a , is reduced at 4 K but those along the b axis, R _b , and ${c}^{\prime }$ axis, R _c _′ , are reduced at 2 K, was explored with the application of a magnetic field and pressure by the electrical resistance measurements. We found that the behavior of the upper critical field and its anisotropy as well as the pressure dependence determined by the R _a measurements are quite similar to those of R _b . Moreover, the excess conductivity for R _b indicates anomalous behavior. These results support an unconventional origin for the anisotropic transition rather than conventional superconducting fluctuation. The reduction in R _a is due to filamentary superconductivity (SC) induced by locally bound electron pairs (local pairs), which correspond to bi-polarons, and the transition of R _b corresponds to the emergence of bulk SC originating from the Cooper pairs triggered by the transfer of the local pairs.https://doi.org/10.1088/1367-2630/aa6d48superconductivitymagnetic fieldpressure |
| spellingShingle | S Tsuchiya K Matsubayashi K Yamaya S Takayanagi S Tanda Y Uwatoko Effects of pressure and magnetic field on superconductivity in ZrTe3: local pair-induced superconductivity New Journal of Physics superconductivity magnetic field pressure |
| title | Effects of pressure and magnetic field on superconductivity in ZrTe3: local pair-induced superconductivity |
| title_full | Effects of pressure and magnetic field on superconductivity in ZrTe3: local pair-induced superconductivity |
| title_fullStr | Effects of pressure and magnetic field on superconductivity in ZrTe3: local pair-induced superconductivity |
| title_full_unstemmed | Effects of pressure and magnetic field on superconductivity in ZrTe3: local pair-induced superconductivity |
| title_short | Effects of pressure and magnetic field on superconductivity in ZrTe3: local pair-induced superconductivity |
| title_sort | effects of pressure and magnetic field on superconductivity in zrte3 local pair induced superconductivity |
| topic | superconductivity magnetic field pressure |
| url | https://doi.org/10.1088/1367-2630/aa6d48 |
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