|
Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Engineering / Faculty of Engineering >
Peer-reviewed Journal Articles, etc >
Effects of pressure and magnetic field on superconductivity in ZrTe3: local pair-induced superconductivity
This item is licensed under:Creative Commons Attribution 3.0 Unported
| Title: | Effects of pressure and magnetic field on superconductivity in ZrTe3: local pair-induced superconductivity |
| Authors: | Tsuchiya, S. Browse this author | | Matsubayashi, K. Browse this author | | Yamaya, K. Browse this author | | Takayanagi, S. Browse this author | | Tanda, S. Browse this author | | Uwatoko, Y. Browse this author |
| Keywords: | superconductivity | | magnetic field | | pressure |
| Issue Date: | Jun-2017 |
| Publisher: | IOP Publishing |
| Journal Title: | New Journal of Physics |
| Volume: | 19 |
| Start Page: | 63004 |
| Publisher DOI: | 10.1088/1367-2630/aa6d48 |
| Abstract: | In this work, the origin of the highly anisotropic superconducting transition in ZrTe3, where the resistance along the a axis, Ra, is reduced at 4 K but those along the b axis, R-b, and c ' 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 Ra measurements are quite similar to those of Rb. Moreover, the excess conductivity for Rb indicates anomalous behavior. These results support an unconventional origin for the anisotropic transition rather than conventional superconducting fluctuation. The reduction in Ra is due to filamentary superconductivity. (SC) induced by locally bound electron pairs (local pairs), which correspond to bi-polarons, and the transition of Rb corresponds to the emergence of bulk SC originating from the Cooper pairs triggered by the transfer of the local pairs. |
| Rights: | https://creativecommons.org/licenses/by/3.0/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/66589 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
|
Submitter: 土屋 聡
|
