Critical fields of the superconducting fullerene RbCs{sub 2}C{sub 60}
Journal Article
·
· Physical Review, B: Condensed Matter
- Department of Physics, Parma University, I-43100 Parma (Italy)
- Atomic Institute of the Austrian Universities, Schuettelstrasse 115, A-1020 Vienna (Austria)
- Istituto MASPEC-CNR, I-43100 Parma (Italy)
The temperature dependence of the upper critical magnetic field {ital H}{sub {ital c}2} of the superconducting RbCs{sub 2}C{sub 60} fullerene has been obtained. The value of {ital H}{sub {ital c}2}(0) at zero temperature is estimated to be 17 T and the coherence length {xi}(0)=4.4 nm. The lower critical field {ital H}{sub {ital c}1} has been studied using three different methods. The {ital H}{sub {ital c}1}({ital T}) dependence obtained from the procedures based on the deviation from perfect diamagnetism and on Bean`s critical-state model has a positive curvature with decreasing temperature. It is shown from a high-field analysis that this saturationless dependence does not reflect the intrinsic {ital H}{sub {ital c}1} of the superconductor. The value of {ital H}{sub {ital c}1}(0) is estimated to be 5.5--8.1 mT and the penetration depth {lambda}(0)=300--370 nm.
- OSTI ID:
- 90502
- Journal Information:
- Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 6 Vol. 52; ISSN 0163-1829; ISSN PRBMDO
- Country of Publication:
- United States
- Language:
- English
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