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VOLUME 52 (1990) | ISSUE 5 | PAGE 914
Flux creep and depth of pinning centers of an organic superconductor κ-(BEDT-TFF)2Cu(NCS)2
The relaxation time of the magnetic moment Pm (t) of a single crystal of an organic superconductor к(BEDT-TTF) 2 Cu (NCS) 2 was investigated. The logarithmic relaxation rate corresponding to a thermally activated flux creep has a sharp maximum in a field B~ 3 mT at 4.2 K. The average depth of the pinning centers was found to be U0 ~ 7.2 X 10 "3 eV.