Abstract
The recent torsional oscillator results of Kim and Chan suggest a supersolid phase transition in solid 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 on any pressure-induced supersolid flow in the pores of Vycor.
- Received 12 March 2005
DOI:https://doi.org/10.1103/PhysRevLett.95.035301
©2005 American Physical Society