Supersolid Helium at High Pressure

Abstract

We have measured the pressure dependence of the supersolid fraction by a torsional oscillator technique. Superflow is found from 25.6 bar up to 136.9 bar. The supersolid fraction in the low temperature limit increases from 0.6 % at 25.6 bar near the melting boundary up to a maximum of 1.5% near 55 bar before showing a monotonic decrease with pressure extrapolating to zero near 170 bar.

4 pages, 4 figures

References in corpus (1)

• Ring exchanges and the supersolid phase of 4He

Cited by in corpus (26)

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• Coexisting ordinary elasticity and superfluidity in a model of defect-free supersolid
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• Thermal History of Solid 4He Under Oscillation
• Solid 4He and the Supersolid Phase: from Theoretical Speculation to the Discovery of a New State of Matter? A Review of the Past and Present Status of Research
• Bose-Einstein Condensate in Solid Helium
• Search for Superfluidity in Solid Hydrogen
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• Binding of a 3He impurity to a screw dislocation in solid 4He
• Supersolids in confined fermions on one-dimensional optical lattices
• Melting curve of ${}^4$He: no sign of the supersolid transition down to 10 mK
• Absence of low temperature anomaly on the melting curve of ${}^4$He
• Zero-point vacancies in quantum solids
• Dissipation peak as an indicator of sample inhomogeneity in solid ${}^4$He oscillator experiments
• Possible role of 3He impurities in solid 4He
• Finite size Berezinski-Kosterlitz-Thouless transition at grain boundaries in solid ${}^4$He and role of ${}^3$He impurities
• Zero-temperature study of vacancies in solid 4He
• Bose-Einstein condensation in a decorated lattice: an application to supersolid