Entropy of solid He4: the possible role of a dislocation glass

@article{Balatsky2006EntropyOS,
  title={Entropy of solid He4: the possible role of a dislocation glass},
  author={Alexander V. Balatsky and Matthias J. Graf and Zohar Nussinov and S. A. Trugman},
  journal={Physical Review B},
  year={2006}
}
Solid He4 is viewed as a nearly perfect Debye solid. Yet, recent calorimetry indicates that its low-temperature specific heat has both cubic and linear contributions. These features appear in the same temperature range ($T \sim 200$ mK) where measurements of the torsional oscillator period suggest a supersolid transition. We analyze the specific heat to compare the measured with the estimated entropy for a proposed supersolid transition with 1% superfluid fraction. We find that the experimental… Expand
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