Electronic structure of novel cation-radical salts in high magnetic fields

Brooks JS; Balicas L; Storr K; Ward BH; Uji S; Terashima T; Terakura C; Schlueter JA; Winter RW; Mohtasham J; Gard GL; Papavassiliou GC; Tokumoto M

Molecular Crystals and Liquid Crystals, Vol.380, 109-116, 2002

Brooks JS, Balicas L, Storr K, Ward BH, Uji S, Terashima T, Terakura C, Schlueter JA, Winter RW, Mohtasham J, Gard GL, Papavassiliou GC, Tokumoto M

Two organic conducting materials, where unusual aspects of their composition play important roles, are explored: beta"-(BEDT-TTF)(2)SF(5)XSO(3) which exhibits superconductivity, or a metal-insulator transition (for X = CH(2)CF(2) or CHF respectively), and tau-(P-S,S-DMEDT-TTF)(2)(AuBr(2))(AuBr(2))(y) which exhibits a large, hysteretic, negative magnetoresistance. Detailed angular dependent magnetoresistance studies that allow a tomographic view of the electronic structure of these materials with increasing magnetic fields are presented.

Keywords:organic conductors;high magnetic fields;electronic structure tomography