3He Fluid Formed in One-Dimensional 1.8 nm Pores Preplated with 4He Layer

Journal Article · Thu Sep 07 00:00:00 EDT 2006 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2354706· OSTI ID:20884835

Matsushita, Yuki; Matsushita, Taku; Toda, Ryo; Hieda, Mitsunori; Wada, Nobuo ^[1]

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1. Department of Physics, Nagoya University, Nagoya 464-8602 (Japan)

In one-dimensional (1D) nanopores 1.8 nm in diameter preplated with 1.2 atomic layers of 4He, we have made 3He film tubes whose diameter is estimated to be about 1.0 nm. At a low 3He density, the heat capacity shows that of a 2D Boltzmann gas at high temperatures followed by a Schottky-like peak at about 300 mK. This result can be understood in terms of dimensional crossover from 2D to 1D with decreasing temperature. The peak appears at a temperature about 0.3 times the energy gap between the ground state and the first excited states of the azimuthal motion in the 3He fluid tubes.

• OSTI ID: 20884835
• Journal Information: AIP Conference Proceedings, Vol. 850, Issue 1; Conference: LT24: 24. international conference on low temperature physics, Orlando, FL (United States), 10-17 Aug 2005; Other Information: DOI: 10.1063/1.2354706; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ENERGY GAP
EXCITED STATES
GROUND STATES
HELIUM 3
HELIUM 4
LAYERS
LIQUIDS
ONE-DIMENSIONAL CALCULATIONS
POROUS MATERIALS
SPECIFIC HEAT
THIN FILMS