U. Wieser, U. Kunze, et al.
Physica E: Low-Dimensional Systems and Nanostructures
We have shown by dc low-field magnetization measurements the existence of diamagnetic shielding and Meissner signals in the ambient-pressure organic superconductors, -(ET)2IBr2 and -(ET)2AuI2, below T=2.5 K and T=4.1 K, respectively [ET is bis(ethylenedithio)tetra- thiafulvalene]. This proves that superconductivity is a volume property in these compounds. We also measured the upper critical field Hc2 in the compound -(ET)2AuI2. Combined with the low-field data this yields a thermodynamically consistent picture using Ginzburg-Landau theory and a weak-coupling Bardeen-Cooper-Schrieffer gap. © 1986 The American Physical Society.
U. Wieser, U. Kunze, et al.
Physica E: Low-Dimensional Systems and Nanostructures
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