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Observation of Low-Temperature Softening of Transverse Elastic Modulus Due to Cobalt Impurities in Mercury Selenide

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Abstract

Influence on elastic moduli of donor electron d-states of cobalt impurities has been investigated in mercury selenide crystals. Experiments have been carried out at the frequency of 53 MHz in the temperature interval of 1.3–100 K. Softening of the \((C_{11} - C_{12})/2\) modulus below 10 K has been observed in the impurity crystals in contrast with the \((C_{11} + C_{12} + 2C_{44})/2\) and \(C_{44}\) moduli those have exhibited hardening at cooling typical for dielectric and semiconductor crystals. The softening of the elastic modulus has been interpreted as manifestation of hybridization of the impurity d-states in the conduction band of the crystal. Comparison of theoretical calculations with experimental data has been proved to be in good agreement and has made it possible to determine the parameters characterizing the hybridized electron states.

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Acknowledgments

The research was carried out within the state assignment of FASO of Russia (theme Electron No. 01201463326), supported in part by RFBR (Project No.15-02-08909a).

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Authors and Affiliations

  1. M.N. Micheev Institute of Metal Physics of Ural Branch of Russian Academy of Sciences, 18, S. Kovalevskayai St., Ekaterinburg, 620137, Russia

    Irina V. Zhevstovskikh & Vsevolod I. Okulov

  2. Ural Federal University named after the First President of Russia B.N. Yeltsin, 19, Mira St., Ekaterinburg, 620002, Russia

    Irina V. Zhevstovskikh, Vladimir V. Gudkov, Maksim N. Sarychev & Kirill A. Medvedev

  3. Chernovtsy National University, 2, Kotsyubinskiy St., Chernovtsy, 58012, Ukraine

    Myroslav D. Andriichuk & Lidiya D. Paranchich

Authors
  1. Irina V. Zhevstovskikh
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  2. Vsevolod I. Okulov
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  3. Vladimir V. Gudkov
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  4. Maksim N. Sarychev
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  5. Kirill A. Medvedev
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  6. Myroslav D. Andriichuk
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  7. Lidiya D. Paranchich
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Correspondence to Irina V. Zhevstovskikh.

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Zhevstovskikh, I.V., Okulov, V.I., Gudkov, V.V. et al. Observation of Low-Temperature Softening of Transverse Elastic Modulus Due to Cobalt Impurities in Mercury Selenide. J Low Temp Phys 185, 571–576 (2016). https://doi.org/10.1007/s10909-015-1418-3

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  • DOI: https://doi.org/10.1007/s10909-015-1418-3

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