Abstract
The electronic structure of Hg3- delta AsF6 was investigated by means of the de Haas-van Alphen (DHVA) effect and compared with the existing theoretical models of Batalla, Berlinsky and Buiting. Also, the dependence of the DHVA oscillations on cooling rate was studied. Measurements of the angular dependence of DHVA frequencies in Hg3- delta AsF6 are presented and show that the Fermi surface of this compound consists of cylinders. Some of these cylinders are straight ( alpha , delta ) and the others ( beta , gamma , mu , epsilon ) exhibit a regular undulation with the periodicity of the lattice. The cooling rate measurements show that certain DHVA oscillations ( delta ) are suppressed relative to the other oscillations ( gamma , epsilon ) when rapid cooling conditions are applied (lack of long-range order).
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