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Effect of high pressure on the electron-phonon interaction and superconductivity in ZrN and HfN

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Abstract

Ab initio calculations of the superconducting properties have been performed for zirconium and hafnium nitrides at normal and high pressures. The results for ZrN are in good agreement with the existing data of the tunnel experiments and measurements of the pressure derivative of the critical temperature T c. It has been shown that the decrease in T c under compression occurs due primarily to an increase in the phonon frequencies.

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Authors and Affiliations

  1. Lebedev Physical Institute, Russian Academy of Sciences, Moscow, 119991, Russia

    E. G. Maksimov & S. V. Ebert

  2. Institute of Metal Research, 110016, Shenyang, People’s Republic of China

    S. Q. Wang

  3. Institute for High Pressure Physics, Russian Academy of Sciences, Troitsk, Moscow region, 142190, Russia

    M. V. Magnitskaya

Authors
  1. E. G. Maksimov
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  2. S. Q. Wang
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  3. M. V. Magnitskaya
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  4. S. V. Ebert
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Corresponding author

Correspondence to E. G. Maksimov.

Additional information

Original Russian Text © E.G. Maksimov, S.Q. Wang, M.V. Magnitskaya, S.V. Ebert, 2008, published in Pis’ma v Zhurnal Éksperimental’noĭ i Teoreticheskoĭ Fiziki, 2008, Vol. 87, No. 8, pp. 507–510.

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Maksimov, E.G., Wang, S.Q., Magnitskaya, M.V. et al. Effect of high pressure on the electron-phonon interaction and superconductivity in ZrN and HfN. Jetp Lett. 87, 437–440 (2008). https://doi.org/10.1134/S0021364008080109

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  • DOI: https://doi.org/10.1134/S0021364008080109

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