Flux creep and depth of pinning centers of an organic superconductor κ-(BEDT-TFF)2Cu(NCS)2
Kuznetsov V. D. , Metlushko V. V., Epanechnikov L. A. , Makarov E. F. , Yagubskii E. B. , Kushch N. D.
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.