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Phys. Rev. Lett. 86, 4322 - 4325 (2001)

Helium-4 Bose Fluids Formed in One-Dimensional 18 Å Diameter Pores

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Nobuo Wada, Junko Taniguchi, and Hiroki Ikegami
Institute of Physics, Basic Science, Graduate School of Arts and Sciences, University of Tokyo, Komaba 3-8-1, Meguro-ku, Tokyo 153-8902, Japan

Shinji Inagaki and Yoshiaki Fukushima
Toyota Central R&D Laboratories, Inc., Yokomichi, Nagakute, Aichi 480-1192, Japan

Received 25 August 2000

Bose fluids restricted in one dimension (1D) are realized by adsorbing 4He atoms on the 1D pore walls with a diameter of about 18 Å. The Bose fluid appears above an adsorbed amount after the pore walls are coated with the inert 4He atoms. Heat capacity of the fluid was observed to have a temperature-linear term at low temperatures. This corresponds to the phonon heat capacity of the Bose fluid in the 1D pores. We estimate the phonon velocity and the interaction of the 1D Bose fluid.


©2001 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevLett.86.4322
DOI: 10.1103/PhysRevLett.86.4322
PACS: 67.70.+n, 67.40.-w

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