Schwenk, HelmutGross, FriederHeidmann, Claus PeterAndres, KlausSchweitzer, DieterKeller, Heimo J.2011-07-192016-03-312011-07-192016-03-311985351350993http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-64269http://elib.uni-stuttgart.de/handle/11682/7595http://dx.doi.org/10.18419/opus-7578The α-modification of (BEDT-TTF)2I3 undergoes a metal-to-insulator transition at T = 135 K. Application of hydrostatic pressure shifts the transition temperature to lower values. Above 12 kbar semimetallic behavior is observed, but no superconductivity is detected up to a pressure of 17 kbar and temperatures down to l00 mK. The β-modifcation, on the other hand, exhibits ambient pressure volume superconductivity below Tc = 1.05 K. Measurements of the anisotropy of the diamagnetic shielding- as well as the Meissner-magnetization are presented.eninfo:eu-repo/semantics/openAccessTetrathiafulvalen , Organischer Supraleiter , Nichtleiter530article