Torsional Oscillator Study of Thin Helium Films on Hydrogen Substrates

Daryl Tulimieri; Norbert Mulders; Moses H.W. Chan

doi:10.1023/a:1022583505766

Torsional Oscillator Study of Thin Helium Films on Hydrogen Substrates

Daryl Tulimieri, Norbert Mulders, Moses H.W. Chan

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

We have made torsional oscillator measurements of thin helium films on a Mylar surface preplated with 2 and 5 layers of H₂. The minimum ⁴He coverage needed for superfluidity, or "inert" layer, n₀ on both surfaces is found to be 6 μmole/m². This is equivalent to 1/2 of a monolayer at bulk liquid density. The superfluid transition in coverages above n₀ is similar to that found on bare Mylar, exhibiting the standard Kosterlitz-Thouless characteristics. We find no anomaly in ρ_s or the dissipation in the film that can be identified with a second transition reported in recent third sound experiments.

Original language	English (US)
Pages (from-to)	609-614
Number of pages	6
Journal	Journal of Low Temperature Physics
Volume	110
Issue number	1-2
DOIs	https://doi.org/10.1023/a:1022583505766
State	Published - Jan 1 1998

All Science Journal Classification (ASJC) codes

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

Access to Document

10.1023/a:1022583505766

Cite this

@article{8362b1537791486ea09fa4174f159c59,

title = "Torsional Oscillator Study of Thin Helium Films on Hydrogen Substrates",

abstract = "We have made torsional oscillator measurements of thin helium films on a Mylar surface preplated with 2 and 5 layers of H2. The minimum 4He coverage needed for superfluidity, or {"}inert{"} layer, n0 on both surfaces is found to be 6 μmole/m2. This is equivalent to 1/2 of a monolayer at bulk liquid density. The superfluid transition in coverages above n0 is similar to that found on bare Mylar, exhibiting the standard Kosterlitz-Thouless characteristics. We find no anomaly in ρs or the dissipation in the film that can be identified with a second transition reported in recent third sound experiments.",

author = "Daryl Tulimieri and Norbert Mulders and Chan, {Moses H.W.}",

year = "1998",

month = jan,

day = "1",

doi = "10.1023/a:1022583505766",

language = "English (US)",

volume = "110",

pages = "609--614",

journal = "Journal of Low Temperature Physics",

issn = "0022-2291",

publisher = "Springer New York",

number = "1-2",

}

TY - JOUR

T1 - Torsional Oscillator Study of Thin Helium Films on Hydrogen Substrates

AU - Tulimieri, Daryl

AU - Mulders, Norbert

AU - Chan, Moses H.W.

PY - 1998/1/1

Y1 - 1998/1/1

N2 - We have made torsional oscillator measurements of thin helium films on a Mylar surface preplated with 2 and 5 layers of H2. The minimum 4He coverage needed for superfluidity, or "inert" layer, n0 on both surfaces is found to be 6 μmole/m2. This is equivalent to 1/2 of a monolayer at bulk liquid density. The superfluid transition in coverages above n0 is similar to that found on bare Mylar, exhibiting the standard Kosterlitz-Thouless characteristics. We find no anomaly in ρs or the dissipation in the film that can be identified with a second transition reported in recent third sound experiments.

AB - We have made torsional oscillator measurements of thin helium films on a Mylar surface preplated with 2 and 5 layers of H2. The minimum 4He coverage needed for superfluidity, or "inert" layer, n0 on both surfaces is found to be 6 μmole/m2. This is equivalent to 1/2 of a monolayer at bulk liquid density. The superfluid transition in coverages above n0 is similar to that found on bare Mylar, exhibiting the standard Kosterlitz-Thouless characteristics. We find no anomaly in ρs or the dissipation in the film that can be identified with a second transition reported in recent third sound experiments.

UR - http://www.scopus.com/inward/record.url?scp=0031646953&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0031646953&partnerID=8YFLogxK

U2 - 10.1023/a:1022583505766

DO - 10.1023/a:1022583505766

M3 - Article

AN - SCOPUS:0031646953

SN - 0022-2291

VL - 110

SP - 609

EP - 614

JO - Journal of Low Temperature Physics

JF - Journal of Low Temperature Physics

IS - 1-2

ER -

Torsional Oscillator Study of Thin Helium Films on Hydrogen Substrates

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this