TY - JOUR
T1 - Superfluid transition of 4He confined in porous glasses
AU - Chan, M. H.W.
N1 - Funding Information:
The work described above is done in collaboration with ,Ken Blum, Paul Crowell, Sheena Murphy, Gane Wang and John Reppy at Cornell University, Keith Gillis, Dan Finotello, Jian Ma, Sid Mukherjee, and Apollo Wong at Pennsylvania State University. It has been a great pleasure to work with them. The author acknowledges constructive conversations with a number of colleagues, especially Jon Machta. M.E. Fisher and J.D. Reppy. He is particularly grateful for the enduring friendship and encouragement given by J.D. Reppy. The figures for this paper are drawn by Sheena Murphy and Apollo Wong. Research done at Pennsylvania State University is supported by NSF through grants, DMR-8701681 and DMR 9008461.
PY - 1991/2/2
Y1 - 1991/2/2
N2 - Recent results of superfluid density and heat capacity measurements of 4He confined in porous Vycor and aerogel glasses of very high porosity are reviewed. These measurements support the interpretation that the superfluid transition of 4He confined in Vycor belongs to the same universality class as that of bulk 4He. The superfluid density of 4He in aerogel glass can be described by a simpel power law to a reduced temperature of 10-4 K; however, the resultant critical exponent and heat capacity behavior are found to be distinctly different from that of bulk.
AB - Recent results of superfluid density and heat capacity measurements of 4He confined in porous Vycor and aerogel glasses of very high porosity are reviewed. These measurements support the interpretation that the superfluid transition of 4He confined in Vycor belongs to the same universality class as that of bulk 4He. The superfluid density of 4He in aerogel glass can be described by a simpel power law to a reduced temperature of 10-4 K; however, the resultant critical exponent and heat capacity behavior are found to be distinctly different from that of bulk.
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U2 - 10.1016/0921-4526(91)90220-9
DO - 10.1016/0921-4526(91)90220-9
M3 - Article
AN - SCOPUS:44949281734
VL - 169
SP - 135
EP - 143
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
SN - 0921-4526
IS - 1-4
ER -