Issue 4, 2016

Distinct structural and dynamical difference between supercooled and normal liquids of hydrogen molecules

Abstract

Supercooled hydrogen liquid as well as superfluid have continued to elude experimental observation due to rapid crystallization. We computationally realized and investigated supercooled hydrogen liquid by a recently developed non-empirical real-time molecular dynamics method, which describes non-spherical hydrogen molecules with the nuclear quantum effects. We demonstrated that the hydrogen supercooled liquid is not a simply cooled liquid but rather exhibits intrinsic structural and dynamical characters including a precursor of tunneling and superfluidity which neither normal hydrogen liquid nor solid possesses. All of the insights provide a milestone for planning experiments of metastable hydrogen systems like glassy and superfluid states and for identifying various unknown hydrogen phases.

Graphical abstract: Distinct structural and dynamical difference between supercooled and normal liquids of hydrogen molecules

Supplementary files

Article information

Article type
Communication
Submitted
30 Oct 2015
Accepted
26 Dec 2015
First published
11 Jan 2016

Phys. Chem. Chem. Phys., 2016,18, 2314-2318

Author version available

Distinct structural and dynamical difference between supercooled and normal liquids of hydrogen molecules

K. Hyeon-Deuk and K. Ando, Phys. Chem. Chem. Phys., 2016, 18, 2314 DOI: 10.1039/C5CP06615H

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