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VOLUME 55 (1992) | ISSUE 6 | PAGE 337
Shubnikov-de Haas oscillations in the new organic metal (ET)2T1Hg(SCN)4
The Shubnikov-de Haas oscillations have been studied in the new, quasi-2D organic metal (ET) 2T1 Hg (SCN) 4 at temperatures to 1.3 К in fields up to 14 T. The field dependence and the temperature dependence of the amplitude of the Shubnikov oscillations are used to estimate the cyclotron mass and the Dingle temperature in the conducting plane: m* 1.4m0 and TD~2.1 K. The angular distributions of the oscillation frequency and amplitude support the picture of a closed sheet of the Fermi surface in (ET) 2T1 Hg (SCN) 4 in the form of a slightly corrugated cylinder with an axis perpendicular to the conducting layers.