Fermiology of the magnetic superconductor beta''-(BEDT-TTF)(4)[(H2O)Fe(C2O4)(3)].C6H5CN

Conference item

The Fermi surface topology and electronic bandwidth of the first ever organic superconductor containing magnetic ions, the charge transfer salt beta''-(BEDT-TTF)(4)[(H2O)Fe(C2O4)(3)].[6H5CN, have been studied using angle-dependent magnetoresistance oscillation (AMRO) and infrared (IR) reflectivity measurements. This material has a superconducting transition temperature of 7 It. AMRO data have been recorded at 1.4 K in a field of 15 T for all possible orientations of the sample with respect to the applied field. Several features with very strong azimuthal dependence are observed. The IR reflectivity is also very anisotropic; the reflectivity for E parallel to the needle axis is eight times greater than for the perpendicular direction. The results are discussed in relation to the calculated band structure and Fermi surface.

Authors: Blundell, S; House, A; Singleton, J; Kurmoo, M; Pratt, F

• Publication status: Published
• Journal: SYNTHETIC METALS
• Volume: 85
• Issue: 1-3
• Pages: 1569-1570
• Publication date: 1997-02-15
• Event title: International Conference on the Science and Technology of Synthetic Metals
• DOI: 10.1016/S0379-6779(97)80352-9
• ISSN: 0379-6779
• Keywords: superconductivity; Fermi surface studies; ET salts; magnetoresistance; magnetism