Anisotropy of the Upper Critical Field in (TMTSF){sub 2}PF{sub 6}
- Departments of Physics and Chemistry, State University of New York, Buffalo, New York 14260 (United States)
- Department of Physics, Princeton University, Princeton, New Jersey 08545 (United States)
The temperature dependence of the upper critical magnetic field H{sub c2}(T) in the quasi-one-dimensional molecular superconductor (TMTSF){sub 2}PF{sub 6} was determined via resistivity, for the intrachain ({bold a}), interchain ({bold b}), and interplane ({bold c}{sup {asterisk}}) directions. For {ital H} along {bold a} and {bold b}, H{sub c2}(T) exhibits pronounced positive curvature, with no sign of saturation to 0.1K. A novel anisotropy inversion is observed, wherein H{sup b}{sub c2} grows larger than H{sup a}{sub c2} and exceeds the paramagnetic limit by more than 200{percent}. The anomalous shape of H{sub c2}(T) is consistent with recent predictions of unconventional behavior in anisotropic superconductors, including the possibility of triplet pairing and reentrant superconductivity in very high field. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 496817
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 18 Vol. 78; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
Similar Records
Madelung energy and theoretical zero-field splittings of (2:1) tetramethyltetraselenafulvalenium hexafluorophosphate ((TMTSF)/sub 2/PF/sub 6/)
Quantized Hall effect and a new field-induced phase transition in the organic superconductor (TMTSF) sub 2 PF sub 6