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

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 tempera...

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Bibliographic Details
Published inJETP letters Vol. 87; no. 8; pp. 437 - 440
Main Authors Maksimov, E. G., Wang, S. Q., Magnitskaya, M. V., Ebert, S. V.
Format Journal Article
LanguageEnglish
Published Moscow Nauka/Interperiodica 01.04.2008
Subjects
Atomic
Biological and Medical Physics
Biophysics
Condensed Matter
Molecular
Optical and Plasma Physics
Particle and Nuclear Physics
Physics
Physics and Astronomy
Quantum Information Technology
Solid State Physics
Spintronics
74.62.-c
63.20.Kr
74.70.Ad
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Summary: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.
ISSN:0021-3640
1090-6487
DOI:10.1134/S0021364008080109