Bele, PetraBrunner, HermannSchweitzer, DieterKeller, Heimo J.2011-08-182016-03-312011-08-182016-03-311994350628521http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-66009http://elib.uni-stuttgart.de/handle/11682/5067http://dx.doi.org/10.18419/opus-5050We report magnetically modulated microwave absorption (MMMA) at low magnetic fields in crystals of the organic superconductors αt-(BEDT-TTF)2I3 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.eninfo:eu-repo/semantics/openAccessTetrathiafulvalen , Organischer Supraleiter530article