Quartz crystal microbalance study of superfluid 4He films on gold and porous gold surfaces

Mitsunori Hieda, Anthony C. Clark, M. H.W. Chan

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

The superfluid transition in sub-monolayer 4He films was studied using quartz crystal microbalance (QCM). We recently improved the QCM technique by replacing the conventional gold electrodes with porous gold, thus increasing the surface area and therefore sensitivity by 40 times. Simultaneous measurements were taken for QCMs with flat and porous gold electrodes contained within the same copper cell. For both QCMs the superfluid transition temperature was found to be proportional to the 4He film thickness. The superfluid transition temperature at each film coverage was greater for porous gold than for flat gold electrodes.

Original languageEnglish (US)
Pages (from-to)91-96
Number of pages6
JournalJournal of Low Temperature Physics
Volume134
Issue number1-2
DOIs
StatePublished - Jan 2004

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Quartz crystal microbalance study of superfluid <sup>4</sup>He films on gold and porous gold surfaces'. Together they form a unique fingerprint.

  • Cite this