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A. Superconductors D. Fluxpinning and creep
Abstract:
We report magnetically modulated microwave absorption ( MMMA ) at low magnetic fields in crystals of the organic superconductors αt-(BEDT-TTF)2 l3 and κ-(BEDT-TTF)2Cu(NCS)2. In both cases a strong MMMA - signal can easily be found below the critical temperature Tc. In some selected crystals series of narrow, periodically spaced lines are observed comparable to corresponding spectra of the CuO - type high Tcsuperconductors. A model developed for the HTSC 's single crystals is used to interpret the results of the organic superconductors.