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Hydrostatic-Pressure-Induced Reentrance of the Metallic State in the κ-(ET)2Hg(SCN)2Cl Quasi-Two-Dimensional Organic Conductor

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Abstract

On cooling below 30 K, the κ-(ET)2Hg(SCN)2Cl quasi-two-dimensional organic metal, which is in the quantum spin liquid state at liquid helium temperatures, undergoes a transition to the Mott insulator state. The application of a hydrostatic pressure p = 0.7 kbar stabilizes the metallic state and makes it possible to study the behavior of the interlayer magnetoresistance at liquid helium temperatures. The field dependence of the magnetoresistance exhibits an unlimited power-law growth, which indicates that the polaron mechanism contributes to the interlayer transport. The spectrum of observed magnetoresistance oscillations corresponds to the Fermi surfaces characteristic of conducting layers with the κ-type structure.

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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, E. I. Zhilyaeva, S. A. Torunova & R. N. Lyubovskaya

  2. Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow region, 142432, Russia

    V. N. Zverev

Authors
  1. R. B. Lyubovskii
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  2. S. I. Pesotskii
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  3. V. N. Zverev
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  4. E. I. Zhilyaeva
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  5. S. A. Torunova
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  6. R. N. Lyubovskaya
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Corresponding author

Correspondence to S. I. Pesotskii.

Additional information

Russian Text © The Author(s), 2020, published in Pis’ma v Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2020, Vol. 112, No. 9, pp. 623–625.

Funding

This work was supported by the Ministry of Science and Higher Education of the Russian Federation (state assignment no. AAAA-A19-119092390079-8, preparation of the samples) and by the Russian Foundation for Basic Research (project nos. 18-02-00308 and 18-02-00280, studies of physical characteristics).

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Lyubovskii, R.B., Pesotskii, S.I., Zverev, V.N. et al. Hydrostatic-Pressure-Induced Reentrance of the Metallic State in the κ-(ET)2Hg(SCN)2Cl Quasi-Two-Dimensional Organic Conductor. Jetp Lett. 112, 582–584 (2020). https://doi.org/10.1134/S0021364020210092

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  • DOI: https://doi.org/10.1134/S0021364020210092

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