Quantum hydrogen-bond symmetrization in the superconducting hydrogen sulfide system
作者： Ion Errea , Matteo Calandra , Chris J. Pickard , Joseph R. Nelson , Richard J. Needs
DOI: 10.1038/NATURE17175
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摘要: The quantum nature of the proton can crucially affect the structural and physical properties of hydrogen compounds. For example, in the high-pressure phases, of H2O, quantum proton fluctuations lead to symmetrization of the hydrogen bond and reduce the boundary between asymmetric and symmetric structures in the phase diagram by 30 gigapascals (ref.). Here we show that an analogous quantum symmetrization occurs in the recently discovered sulfur hydride superconductor with a superconducting transition temperature T c of 203 kelvin at …
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