High-Tc Phase of PrO0.5F0.5BiS2 single crystal induced by uniaxial pressure
| Autor: | Fujioka, Masaya, Nagao, Masanori, Denholme, Saleem J., Tanaka, Masashi, Takeya, Hiroyuki, Yamaguchi, Takahide, Takano, Yoshihiko |
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| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Appl. Phys. Lett., 105, 052601 (2014) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1063/1.4891197 |
| Popis: | We demonstrated a pressure-induced phase transition from a low-Tc phase (3.5 K) to a high-Tc phase (8.7 K) in single crystalline PrO0.5F0.5BiS2. The high-Tc phase is easily observed even at 0.7 GPa by uniaxial pressure obtained from a geometric effect of a single crystal with an extremely-thin thickness. For this phase transition, superconducting anisotropy and the coherence length along the c axis change from {\gamma} = 20 to 9.3 and from {\xi}c = 0.56 to 0.71 nm respectively. It is suggested that a shrinkage in the c lattice constant by applied uniaxial pressure enhances the three dimensionality in the superconducting state. Comment: 12 pages, 4 figures, Appl. Phys. Lett., accepted |
| Databáze: | arXiv |
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