Abstract
The electronic structure of the quasi two-dimensional (2D) organic superconductor \(\)-(ET)2SF5CH2CF2SO3 was examined by measuring Shubnikov-de Haas (SdH) and angle-dependent magnetoresistance (AMRO) oscillations and by comparing with electronic band-structure calculations. The SdH oscillation frequencies follow the \(\) angular dependence expected for a 2D Fermi surface (FS), and the observed fundamental frequency shows that the 2D FS is 5% of the first Brillouin zone in size. The AMRO data indicate that the shape of the 2D FS is significantly non-circular. The calculated electronic structure has a 2D FS in general agreement with experiment. From the temperature and angular dependence of the SdH amplitude, the cyclotron and band effective masses were estimated to be \(\) and \(\),where g is the conduction electron g factor and \(\) the free electron mass. The band effective mass is estimated to be \(\) from the calculated electronic band structure.
Published Version
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