Hydrogen "penta-graphene-like" structure stabilized by hafnium: a high-temperature conventional superconductor

26 Feb 2020 Xie Hui Yao Yansun Feng Xiaolei Duan Defang Song Hao Zhang Zihan Jiang Shuqing Redfern Simon A. T. Kresin Vladimir Z. Pickard Chris J. Cui Tian

The recent discovery of H3S and LaH10 superconductors with record high superconducting transition temperatures, Tc, at high pressure, has fueled the search for room-temperature superconductivity in the compressed superhydrides. Here we predict the existence of an unprecedented hexagonal HfH10, with an extraordinarily high Tc of around 213-234 K at 250 GPa... (read more)

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  • SUPERCONDUCTIVITY