ISSN:
1434-6036
Keywords:
PACS. 71.18.+y Fermi surface: calculations and measurements; effective mass, g factor - 74.70.Kn Organic superconductors
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s100510050185
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