De Haas-van Alphen oscillations in the organic quasi-two-dimensional metal (ET)8[Hg4Cl12(C6H5Cl)2] |
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| Authors: | R. B. Lyubovskii S. I. Pesotskii V. I. Nizhankovskii W. Biberacher R. N. Lyubovskaya |
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| Affiliation: | (1) Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow oblast, 142432, Russia;(2) International Laboratory of High Magnetic Fields and Low Temperatures, 53-421 Wročlaw, Poland;(3) Walter Meissner Institut, D-85748 Garching, Germany |
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| Abstract: | The behavior of de Haas-van Alphen oscillations in the quasi-2D organic metal (ET)8[Hg4Cl12(C6H5Cl)2] was studied in detail. The section of the Fermi surface of this metal is a two-dimensional network of magnetic breakdown orbits. Only two frequencies, which corresponded to allowed closed orbits, FA and FMB, were detected. This is in agreement with the earlier studies of Shubnikov-de Haas oscillations in this metal. The reason for the absence of other allowed frequencies remains unclear. The angular dependences of the amplitudes of FA and FMB oscillations contain a series of “spin zeros.” An analysis of their positions led us to suggest that many-particle interactions were weakened in (ET)8[Hg4Cl12(C6H5Cl)2]. |
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