Superfluid critical behavior inporous media
- 5 November 1990
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 65 (19), 2410-2413
- https://doi.org/10.1103/physrevlett.65.2410
Abstract
We have observed sharp cusplike heat-capacity singularities, coincident with the superfluid transition, in two aerogel glasses. These features are interpreted as conclusive evidence of genuine critical behavior at the superfluid transition in these systems. The cusplike heat-capacity singularities confirm that aerogels are not in the same universality class as bulk helium.
Keywords
This publication has 18 references indexed in Scilit:
- Disorder and the Superfluid Transition in LiquidPhysical Review Letters, 1988
- Sharp Heat-Capacity Signature at the Superfluid Transition of Helium Films in Porous GlassesPhysical Review Letters, 1988
- AerogelsScientific American, 1988
- The chemistry of and physics with porous sol-gel glassesJournal of Applied Physics, 1987
- Universality of static properties near the superfluid transition inPhysical Review B, 1984
- Preparation of silica aerogel for Cherenkov countersNuclear Instruments and Methods in Physics Research, 1982
- Superfluid Transition ofFilms Adsorbed on Porous Vycor GlassPhysical Review Letters, 1977
- Superfluid Density in Porous Vycor GlassPhysical Review Letters, 1975
- Second-Sound Velocity and Superfluid Density inunder Pressure nearPhysical Review A, 1973
- Size effects in He II as measured by fourth soundJournal of Low Temperature Physics, 1970