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Influence of the cooling rate on the superconducting properties of the organic solid di-tetramethyltetraselenafulvalenium-perchlorate TMTSF/sub 2/ClO/sub 4/

Journal Article · · Phys. Rev. Lett.; (United States)

Specific-heat measurements on the organic solid di-tetramethyltetraselenafulvalenium-perchlorate TMTSF/sub 2/ClO/sub 4/ demonstrate that T/sub c/ decreases as much as 22%, when the cooling rate below 40 K is changed from 0.1 K/min (relaxed state) to 10 K/min (quenched state). The phenomenon is fully reversible as indicated by annealing experiments. The parameters of the superconducting state, the specific-heat jump, the entropy, and the upper critical fields (parallelc*) are strongly affected by the quenching process. A possible explanation is that quenching freezes out lattice disorder.

Research Organization:
Laboratoire de Physique des Solides, Universite Paris Sud, F-91405 Orsay, France
OSTI ID:
6878432
Journal Information:
Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 49:18; ISSN PRLTA
Country of Publication:
United States
Language:
English