Disorder and the superfluid transition in liquid /sup 4/He

Journal Article · Mon Oct 24 00:00:00 EDT 1988 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.61.1950· OSTI ID:6798146

Chan, M H.W.; Blum, K I; Murphy, S Q; Wong, G K.S.; Reppy, J D

The influence of quenched disorder on the critical behavior of superfluid /sup 4/He is studied by confinement of the helium to the pores of three different porous media: Vycor, xerogel, and aerogel glass. In each case a well defined power-law behavior for the superfluid density is observed as the transition temperature is approached. In Vycor the superfluid critical exponent is bulklike, whereas strikingly different critical exponents are seen in the other two media.

• Research Organization: The Laboratory of Atomic and Solid State Physics and the Material Science Center, Cornell University, Ithaca, New York 14853
• OSTI ID: 6798146
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 61:17; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

640450* -- Fluid Physics-- Superfluidity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COLLOIDS
DENSITY
DISPERSIONS
EVEN-EVEN NUCLEI
GELS
GLASS
HELIUM 4
HELIUM ISOTOPES
ISOTOPES
LIGHT NUCLEI
MATERIALS
NUCLEI
PHYSICAL PROPERTIES
POROUS MATERIALS
RANDOMNESS
STABLE ISOTOPES
SUPERFLUIDITY
VYCOR