Pressure-driven flow of solid helium
Other Condensed Matter
2009-11-11 v1
Abstract
The recent torsional oscillator results of Kim and Chan suggest a supersolid phase transition in solid 4He. We have used a piezoelectrically driven diaphragm to study the flow of solid helium through an array of capillaries. Our measurements showed no indication of low temperature flow, placing stringent restrictions on supersolid flow in response to a pressure difference. The average flow speed at low temperatures was less than 1.2x10-14 m/s, corresponding to a supersolid velocity at least 7 orders of magnitude smaller than the critical velocities inferred from the torsional oscillator measurements.
Cite
@article{arxiv.cond-mat/0601149,
title = {Pressure-driven flow of solid helium},
author = {James Day and John Beamish},
journal= {arXiv preprint arXiv:cond-mat/0601149},
year = {2009}
}
Comments
4 pages, 3 figures