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Recovery of the metallic state and quantum oscillations in a dielectric salt of the (ET)8[Hg4X12(C6H5Y)2] family at X = Y = Br under compression

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Abstract

The quasi-two-dimensional organic conductor (ET)8[Hg4Br12(C6H5Br)2] (ET is bis(ethylenedithio)tetrathiafulvalene) undergoes a metal-insulator phase transition at T ∼ 170 K. It has been shown that a pressure of 8 kbar suppresses this transition and holds a metallic state to liquid-helium temperatures. Shubnikov—de Haas quantum oscillations with the single frequency F = 215 T have been observed in a magnetic field up to 15 T. The properties of this salt are compared to the properties of the (ET)8[Hg4Cl12(C6H5Cl)2] salt of the same family. Time annealing provides an important effect on the conducting properties of the salt under investigation.

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Authors and Affiliations

  1. Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow region, 142432, Russia

    R. B. Lyubovskii, S. I. Pesotskii, R. N. Lyubovskaya, E. I. Zhilyaeva & O. A. Bogdanova

  2. International Laboratory of High Magnetic Fields and Low Temperatures, 53-421, Wroclaw, Poland

    R. B. Lyubovskii & S. I. Pesotskii

Authors
  1. R. B. Lyubovskii
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  2. S. I. Pesotskii
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  3. R. N. Lyubovskaya
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  4. E. I. Zhilyaeva
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  5. O. A. Bogdanova
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Correspondence to R. B. Lyubovskii.

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Original Russian Text © R.B. Lyubovskii, S.I. Pesotskii, R.N. Lyubovskaya, E.I. Zhilyaeva, O.A. Bogdanova, 2009, published in Pis’ma v Zhurnal Éksperimental’noĭ i Teoreticheskoĭ Fiziki, 2009, Vol. 89, No. 11, pp. 685–687.

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Lyubovskii, R.B., Pesotskii, S.I., Lyubovskaya, R.N. et al. Recovery of the metallic state and quantum oscillations in a dielectric salt of the (ET)8[Hg4X12(C6H5Y)2] family at X = Y = Br under compression. Jetp Lett. 89, 583–585 (2009). https://doi.org/10.1134/S0021364009110125

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  • DOI: https://doi.org/10.1134/S0021364009110125

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