Freezing and pressure-driven flow of solid helium in Vycor

Abstract

The recent torsional oscillator results of Kim and Chan suggest a supersolid phase transition in solid He-4 confined in Vycor. We have used a capacitive technique to directly monitor density changes for helium confined in Vycor at low temperature and have used a piezoelectrically driven diaphragm to study the pressure-induced flow of solid helium into the Vycor pores. Our measurements showed no indication of a mass redistribution in the Vycor that could mimic supersolid decoupling and put an upper limit of about 0.003 um/s on any pressure-induced supersolid flow in the pores of Vycor.

5 pages, 4 figures

References in corpus (1)

• On the Supersolid State of Matter

Cited by in corpus (31)

• Superglass Phase of Helium-four
• Observation of Unusual Mass Transport in Solid hcp 4He
• The fate of vacancy-induced supersolidity in 4He
• What makes a crystal supersolid ?
• Pressure-driven flow of solid helium
• On the origin of the decrease in the torsional oscillator period of solid He4
• Intrinsic and dislocation induced elastic behavior of solid helium
• Entropy of solid He4: the possible role of a dislocation glass
• Observation of Mass Transport through Solid 4He
• 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
• Superfluidity of Dense ${}^4$He in Vycor
• Mass flux characteristics in solid 4He for T> 100 mK: Evidence for Bosonic Luttinger Liquid behavior
• Mass flux and solid growth in solid 4He: 60 mK - 700 mK
• Bose-Einstein Condensate in Solid Helium
• Non Classical Rotational Inertia Fraction in a One Dimensional Model of Supersolid
• Mass flow through solid 4He induced by the fountain effect
• The glassy response of solid He-4 to torsional oscillations
• Dissipative superfluid mass flux through solid 4He
• Two-level systems and mass deficit in quantum solids
• Growth of solid hcp \^4He off the melting curve
• Absence of low temperature anomaly on the melting curve of ${}^4$He
• A glassy contribution to the heat capacity of hcp ${}^4$He solids
• Momentum deficit in quantum glasses
• Classical and relativistic dynamics of supersolids: variational principle
• Classification of a supersolid: Trial wavefunctions, Symmetry breakings and Excitation spectra
• Superfluidity versus localization in bulk 4He at zero temperature
• Finite size Berezinski-Kosterlitz-Thouless transition at grain boundaries in solid ${}^4$He and role of ${}^3$He impurities
• Tunnelling defect nanoclusters in hcp 4He crystals: alternative to supersolidity
• Two-body correlations and the superfluid fraction for nonuniform systems
• Monte Carlo Simulations of an Extended Feynman-Kikuchi Model
• Quantized vortex state in hcp solid 4He