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Mixing effects in the crystallization of supercooled quantum binary liquids

AutorKühnel, Matthias; Fernández Sánchez, José María ; Tramonto, Filipo; Tejeda, Guzmán ; Moreno, Elena ; Kalinin, Anton; Nava, Marco; Galli, Davide E.; Montero, Salvador ; Grisenti, Robert E.
Fecha de publicación11-ago-2015
EditorAmerican Institute of Physics
CitaciónJournal of Chemical Physics, 143:064504 (2015)
ResumenBy means of Raman spectroscopy of liquid microjets, we have investigated the crystallization process of supercooled quantum liquid mixtures composed of parahydrogen (pH2) or orthodeuterium (oD2) diluted with small amounts of neon. We show that the introduction of the Ne impurities affects the crystallization kinetics in terms of a significant reduction of the measured pH2 and oD2 crystal growth rates, similarly to what found in our previous work on supercooled pH2-oD2 liquid mixtures [Kühnel et al., Phys. Rev. B 89, 180201(R) (2014)]. Our experimental results, in combination with pathintegral simulations of the supercooled liquid mixtures, suggest in particular a correlation between the measured growth rates and the ratio of the effective particle sizes originating from quantum delocalization effects. We further show that the crystalline structure of the mixtures is also affected to a large extent by the presence of the Ne impurities, which likely initiate the freezing process through the formation of Ne-rich crystallites. C 2015 AIP Publishing LLC.
Descripción7 pags.; 8 figs.; 1 tab.; app.
Versión del editorhttp://dx.doi.org/10.1063/1.4928280
URIhttp://hdl.handle.net/10261/121106
DOI10.1063/1.4928280
ISSN0021-9606
E-ISSN1089-7690
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