Journal
PHYSICAL REVIEW B
Volume 89, Issue 18, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.89.180201
Keywords
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Funding
- Deutsche Forschungsgemeinschaft [593962]
- Spanish Ministerio de Ciencia e Innovacion [FIS2010-22064-C02, HD2008-0068]
- CINECA
- Regione Lombardia award, under the LISA initiative
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We report a quantitative experimental study of the crystallization kinetics of supercooled quantum liquid mixtures of parahydrogen (pH(2)) and orthodeuterium (oD(2)) by high spatial resolution Raman spectroscopy of liquid microjets. We show that in a wide range of compositions the crystallization rate of the isotopic mixtures is significantly reduced with respect to that of the pure substances. To clarify this behavior we have performed path-integral simulations of the nonequilibrium pH(2)-oD(2) liquid mixtures, revealing that differences in quantum delocalization between the two isotopic species translate into different effective particle sizes. Our results provide experimental evidence for crystallization slowdown of quantum origin, offering a benchmark for theoretical studies of quantum behavior in supercooled liquids.
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