TY - JOUR
T1 - Superfluid transition of 4He in ultralight aerogel
AU - Yoon, Jongsoo
AU - Sergatskov, Dmitri
AU - Ma, Jian
AU - Mulders, Norbert
AU - Chan, Moses Hung-Wai
PY - 1998/2/16
Y1 - 1998/2/16
N2 - We present superfluid density and heat capacity results of 4He entrained in 5%, 2%, and 0.5% dense silica aerogel. The superfluid density exponent shows a systematic decrease towards the bulk 4He value with decreasing aerogel density. Singular contribution to heat capacity is observed on both sides of the transition in aerogel of 2% and 0.5% silica. In the lightest sample, the scaling law α=α and the hyperscaling relation 2-α=dν=dζ are satisfied.
AB - We present superfluid density and heat capacity results of 4He entrained in 5%, 2%, and 0.5% dense silica aerogel. The superfluid density exponent shows a systematic decrease towards the bulk 4He value with decreasing aerogel density. Singular contribution to heat capacity is observed on both sides of the transition in aerogel of 2% and 0.5% silica. In the lightest sample, the scaling law α=α and the hyperscaling relation 2-α=dν=dζ are satisfied.
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U2 - 10.1103/PhysRevLett.80.1461
DO - 10.1103/PhysRevLett.80.1461
M3 - Article
AN - SCOPUS:0007726568
VL - 80
SP - 1461
EP - 1464
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 7
ER -