Nonclassical rotational inertia in helium crystals

A. C. Clark, J. T. West, M. H.W. Chan

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It has been proposed that the observed nonclassical rotational inertia (NCRI) in solid helium results from the superflow of thin liquid films along interconnected grain boundaries within the sample. We have observed NCRI in large He4 crystals grown at constant temperature and pressure, demonstrating that the superfluid grain boundary model cannot explain the phenomenon.

Original languageEnglish (US)
Article number135302
JournalPhysical Review Letters
Issue number13
StatePublished - Sep 26 2007


All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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