Abstract
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.
Original language | English (US) |
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Pages (from-to) | 1461-1464 |
Number of pages | 4 |
Journal | Physical review letters |
Volume | 80 |
Issue number | 7 |
DOIs | |
State | Published - Feb 16 1998 |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy