Superfluid transition of 4He in ultralight aerogel

Jongsoo Yoon, Dmitri Sergatskov, Jian Ma, Norbert Mulders, Moses Hung-Wai Chan

Research output: Contribution to journalArticlepeer-review

56 Scopus citations

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 languageEnglish (US)
Pages (from-to)1461-1464
Number of pages4
JournalPhysical Review Letters
Volume80
Issue number7
DOIs
StatePublished - Feb 16 1998

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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