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Investigation of superconductivity in compressed vanadium hydrides

Abstract

Aiming at searching new superconducting materials, we have performed systematically simulations on phase diagram, crystal structures and electronic properties of vanadium hydrides under high pressure. The species of VH, VH2, VH3, and VH5 have been found to be stable under high pressure, among which, VH2 has been investigated before. Moreover, all the three uncovered stoichiometries show strong ionic feature as a result of charge transfer from V to H. The calculations of electron-phonon coupling reveal the potential superconductive vanadium hydrides with estimated superconducting critical temperature (Tc) values of 6−11 K for R-3m (VH), 8−2 K for Fm-3m (VH3), and 31−22 K for P6/mmm (VH5) with the pressure ranging from 150 GPa to 250 GPa.

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Publication details

The article was received on 22 May 2017, accepted on 21 Aug 2017 and first published on 21 Aug 2017


Article type: Paper
DOI: 10.1039/C7CP03435K
Citation: Phys. Chem. Chem. Phys., 2017, Accepted Manuscript
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    Investigation of superconductivity in compressed vanadium hydrides

    Q. Zhuang, X. Jin, Q. Lv, Y. Li, Z. Shao, Z. Liu, X. Li, H. Zhang, X. Meng, B. Kuo and T. Cui, Phys. Chem. Chem. Phys., 2017, Accepted Manuscript , DOI: 10.1039/C7CP03435K

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