Heat capacity of liquid 4He confined in a nanoporous glass

Keiichi Yamamoto, Yoshiyuki Shibayama, Keiya Shirahama

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We report a preliminary study of heat capacities of 4He confined in a nanoporous Gelsil glass that has nanopores of 2.5 nm in diameter. The heat capacity has a broad peak at a temperature far above the superfluid transition temperature obtained by torsional oscillator technique. The heat-capacity peak is attributed to formation of localized Bose-Einstein Condensates in the nanopores, in which the long-range superfluid coherence is destroyed by pore size distribution or random potential inherent to the porous glass.

Original languageEnglish
Pages (from-to)353-357
Number of pages5
JournalJournal of Low Temperature Physics
Volume150
Issue number3-4
DOIs
Publication statusPublished - 2008 Feb

Fingerprint

Specific heat
Nanopores
specific heat
Glass
glass
Liquids
liquids
Bose-Einstein condensates
Superconducting transition temperature
Pore size
transition temperature
oscillators
porosity
Temperature
temperature

Keywords

  • Bose-Einstein condensation
  • Porous media
  • Quantum phase transition
  • Superfluidity

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Heat capacity of liquid 4He confined in a nanoporous glass. / Yamamoto, Keiichi; Shibayama, Yoshiyuki; Shirahama, Keiya.

In: Journal of Low Temperature Physics, Vol. 150, No. 3-4, 02.2008, p. 353-357.

Research output: Contribution to journalArticle

Yamamoto, Keiichi ; Shibayama, Yoshiyuki ; Shirahama, Keiya. / Heat capacity of liquid 4He confined in a nanoporous glass. In: Journal of Low Temperature Physics. 2008 ; Vol. 150, No. 3-4. pp. 353-357.
@article{910c5da5ad9b4811ae008d917df8e3d8,
title = "Heat capacity of liquid 4He confined in a nanoporous glass",
abstract = "We report a preliminary study of heat capacities of 4He confined in a nanoporous Gelsil glass that has nanopores of 2.5 nm in diameter. The heat capacity has a broad peak at a temperature far above the superfluid transition temperature obtained by torsional oscillator technique. The heat-capacity peak is attributed to formation of localized Bose-Einstein Condensates in the nanopores, in which the long-range superfluid coherence is destroyed by pore size distribution or random potential inherent to the porous glass.",
keywords = "Bose-Einstein condensation, Porous media, Quantum phase transition, Superfluidity",
author = "Keiichi Yamamoto and Yoshiyuki Shibayama and Keiya Shirahama",
year = "2008",
month = "2",
doi = "10.1007/s10909-007-9554-z",
language = "English",
volume = "150",
pages = "353--357",
journal = "Journal of Low Temperature Physics",
issn = "0022-2291",
publisher = "Springer New York",
number = "3-4",

}

TY - JOUR

T1 - Heat capacity of liquid 4He confined in a nanoporous glass

AU - Yamamoto, Keiichi

AU - Shibayama, Yoshiyuki

AU - Shirahama, Keiya

PY - 2008/2

Y1 - 2008/2

N2 - We report a preliminary study of heat capacities of 4He confined in a nanoporous Gelsil glass that has nanopores of 2.5 nm in diameter. The heat capacity has a broad peak at a temperature far above the superfluid transition temperature obtained by torsional oscillator technique. The heat-capacity peak is attributed to formation of localized Bose-Einstein Condensates in the nanopores, in which the long-range superfluid coherence is destroyed by pore size distribution or random potential inherent to the porous glass.

AB - We report a preliminary study of heat capacities of 4He confined in a nanoporous Gelsil glass that has nanopores of 2.5 nm in diameter. The heat capacity has a broad peak at a temperature far above the superfluid transition temperature obtained by torsional oscillator technique. The heat-capacity peak is attributed to formation of localized Bose-Einstein Condensates in the nanopores, in which the long-range superfluid coherence is destroyed by pore size distribution or random potential inherent to the porous glass.

KW - Bose-Einstein condensation

KW - Porous media

KW - Quantum phase transition

KW - Superfluidity

UR - http://www.scopus.com/inward/record.url?scp=38549099158&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=38549099158&partnerID=8YFLogxK

U2 - 10.1007/s10909-007-9554-z

DO - 10.1007/s10909-007-9554-z

M3 - Article

AN - SCOPUS:38549099158

VL - 150

SP - 353

EP - 357

JO - Journal of Low Temperature Physics

JF - Journal of Low Temperature Physics

SN - 0022-2291

IS - 3-4

ER -