Superconductivity in polycrystalline pressed pellets of k-(BEDT-TTF)2I3

Balthes, Eduard; Breining, Angela; Kahlich, Siegfried; Moldenhauer, Jörg; Schweitzer, Dieter; Bele, Petra; Brunner, Hermann; Heinen, Ilsabe; Nuber, Bernhard; Keller, Heimo J.

Superconductivity in polycrystalline pressed pellets of k-(BEDT-TTF)2I3

dc.contributor.author	Balthes, Eduard	de
dc.contributor.author	Breining, Angela	de
dc.contributor.author	Kahlich, Siegfried	de
dc.contributor.author	Moldenhauer, Jörg	de
dc.contributor.author	Schweitzer, Dieter	de
dc.contributor.author	Bele, Petra	de
dc.contributor.author	Brunner, Hermann	de
dc.contributor.author	Heinen, Ilsabe	de
dc.contributor.author	Nuber, Bernhard	de
dc.contributor.author	Keller, Heimo J.	de
dc.date.accessioned	2011-08-16	de
dc.date.accessioned	2016-03-31T08:36:24Z
dc.date.available	2011-08-16	de
dc.date.available	2016-03-31T08:36:24Z
dc.date.issued	1993	de
dc.date.updated	2011-08-16	de
dc.description.abstract	Investigations of the transport properties of single crystals and polycrystalline pressed samples of K-( BEDT-TTF)2I3 are presented. In contrast to polycrystalline pressed samples of K-(BEDT-TTF)2Cu(NCS)2 and K-(BEDT-TTF)2Cu [N(CN)2]Br those of K-(BEDT-TTF)2I3 show bulk superconductivity indicating that the loss of superconductivity in the first two types of samples is not due to the special structure of the K-phase, but probably due to a disproportionation of Cu1+ under the anisotropic pressure during the preparation of the samples. Annealing the single crystals as well as the polycrystalline pressed samples of K-(BEDT-TTF)2I3 at 75°C for a few days results in a structural transfomation with an increase in the transition temperature for superconductivity (about 8 K for the crystals). IR-spectra indicate a transfomatlon into a structure which is identical with αt-(BED-TTF)2I3 which seems to be the thermodynamically most stable phase of the several (BEDT-TTF)2I3 phases.	en
dc.identifier.other	35417603X	de
dc.identifier.uri	http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-65736	de
dc.identifier.uri	http://elib.uni-stuttgart.de/handle/11682/5064
dc.identifier.uri	http://dx.doi.org/10.18419/opus-5047
dc.language.iso	en	de
dc.rights	info:eu-repo/semantics/openAccess	de
dc.subject.classification	Tetrathiafulvalen , Organischer Supraleiter	de
dc.subject.ddc	530	de
dc.title	Superconductivity in polycrystalline pressed pellets of k-(BEDT-TTF)2I3	en
dc.type	article	de
ubs.fakultaet	Fakultät Mathematik und Physik	de
ubs.fakultaet	Fakultätsübergreifend / Sonstige Einrichtung	de
ubs.institut	3. Physikalisches Institut	de
ubs.institut	Sonstige Einrichtung	de
ubs.opusid	6573	de
ubs.publikation.source	Synthetic metals 56 (1993), S. 2859-2864	de
ubs.publikation.typ	Zeitschriftenartikel	de

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