Critical fields of the ambient pressure stable superconducting state at 8K of the organic metal αt-(BEDTTTF)2I3

✍ Scribed by E. Gogu; D. Schweitzer; H.J. Keller

• Publisher: Elsevier Science
• Year: 1988
• Tongue: English
• Weight: 146 KB
• Volume: 153-155
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/0921-4534(88)90698-3

✦ Synopsis

Crystals of ~tt-(BEDT-TTF)21 a are organic metals with a stable 8K superconducting transition at ambient pressure. The upper critical fields Hc2 of ctt-(BEDT-TTF)213 were determined in dependence of the temperature and of the angle of the magnetic field with respect to the various cristal axes, by measuring the raid-transition of the resistivity as well as of the rf penetration depth (ac-susceptibilityl. The values obtained by both metlxxies agree quite well. The data were armlised with the anisotropic effective mass model. The highly two dimensional nature of the metal is confirlm~, but in the temperature dependence of the critical field with the magnetic field parallel to the aiD-plane a crossover from a three-to a two-dimensiorml behaviour is observed.