title: 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.
authors.affiliation: Department of Chemistry, Kyoto University, Kyoto 606-8502, Japan. kim@kuchem.kyoto-u.ac.jp and Japan Science and Technology Agency, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan.
authors.forename: Kim
authors.initials: K
authors.lastname: Hyeon-Deuk
authors.affiliation: Department of Chemistry, Kyoto University, Kyoto 606-8502, Japan. kim@kuchem.kyoto-u.ac.jp.
authors.forename: Koji
authors.initials: K
authors.lastname: Ando