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

Mitsunori Hieda, Anthony C. Clark, Moses Hung-Wai Chan

Research output: Contribution to journalArticle

4 Citations (Scopus)

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
StatePublished - Jan 1 2004

Fingerprint

Quartz crystal microbalances
quartz crystals
Gold
microbalances
gold
Electrodes
Superconducting transition temperature
electrodes
transition temperature
Film thickness
Copper
Monolayers
film thickness
copper
sensitivity
cells

All Science Journal Classification (ASJC) codes

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

Cite this

Hieda, Mitsunori ; Clark, Anthony C. ; Chan, Moses Hung-Wai. / Quartz crystal microbalance study of superfluid 4He films on gold and porous gold surfaces. In: Journal of Low Temperature Physics. 2004 ; Vol. 134, No. 1-2. pp. 91-96.
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Quartz crystal microbalance study of superfluid 4He films on gold and porous gold surfaces. / Hieda, Mitsunori; Clark, Anthony C.; Chan, Moses Hung-Wai.

In: Journal of Low Temperature Physics, Vol. 134, No. 1-2, 01.01.2004, p. 91-96.

Research output: Contribution to journalArticle

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