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http://dx.doi.org/10.18419/opus-5022
| Autor(en): | Schweitzer, Dieter Bele, Petra Brunner, Hermann Gogu, Emil Haeberlen, Ulrich Hennig, Ingolf Klutz, Thomas Swietlik, Roman Keller, Heimo J. |
| Titel: | A stable superconducting state at 8K and ambient pressure in αt-(BEDT-TTF)2I3 |
| Erscheinungsdatum: | 1987 |
| Dokumentart: | Zeitschriftenartikel |
| Erschienen in: | Zeitschrift für Physik, B 67 (1987), S. 489-495. URL http://dx.doi.org./10.1007/BF01304118 |
| URI: | http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-64809 http://elib.uni-stuttgart.de/handle/11682/5039 http://dx.doi.org/10.18419/opus-5022 |
| Zusammenfassung: | We report bulk superconductivity at 8 K and ambient pressure in crystals of α t (BEDT-TTF)2I3. In contrast to the earlier observed metastable superconducting state at 8 K in crystals of β-(BEDT-TTF)2I3 here the superconducting state is stable and the crystals can be prepared by tempering α-(BEDT-TTF)2I3 above 70 °C for several days. ac-susceptibility measurements show that the observed superconducting state at 8 K is a bulk property of the crystals. Resistivity measurements indicate a sharp superconducting transition at 8 K with an onset temperature of about 9 K. The upper critical fields Hc2 at 1.3 K lie between 3 and 11 T depending on the direction of the magnetic field with respect to the crystal axes. ESR- as well as NMR-measurements indicate a total transformation of the α-phase crystals into the new superconducting α t -crystals after tempering. |
| Enthalten in den Sammlungen: | 08 Fakultät Mathematik und Physik |
Dateien zu dieser Ressource:
| Datei | Beschreibung | Größe | Format | |
|---|---|---|---|---|
| schw106.pdf | 615,91 kB | Adobe PDF | Öffnen/Anzeigen |
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