Dimensional-crossover of 3He gas formed in one-dimensional nanometer tunnel

Yuki Matsushita, Junko Taniguchi, Akira Yamaguchi, Hidehiko Ishimoto, Hiroki Ikegami, Taku Matsushita, Nobuo Wada, Silvina M. Gatica, Milton W. Cole, Francesco Ancilotto

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


We have measured the heat capacity of 3He adsorbed on one-dimensional (1D) nanopores of FSM-16 with different pore-diameters. Dilute 3He atoms on more than one layers of 4He preplated nanotunnels with 22 Å in diameter show a Schottky type peak around 0.25 K, which is similar to our recent report for 28 Å nanotunnels. This behavior of heat capacity is explained as the crossover from 1D to 2D motion of Fermi gas in a confined geometry. The pore-size effect on the temperature and magnitude of the peak is quantitatively reproduced by a simple calculation for non-interacting Fermi gas in the adsorption potential from the substrate.

Original languageEnglish (US)
Pages (from-to)211-216
Number of pages6
JournalJournal of Low Temperature Physics
Issue number1-2
StatePublished - Sep 5 2005

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • General Materials Science
  • Condensed Matter Physics


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