Binding Energy of He Dimer in Nanotubes: Effect of Adsorption Potential

Dimer formation by He atoms confined in a narrow tube is studied and the effect of adsorption potential is clarified. The results are well explained in terms of the effective radius $\langle \rho \rangle$ and the width of the single-particle ground-state wave function $\Delta\rho$. For 3 He, adsorpt...

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Bibliographic Details
Published in:Journal of the Physical Society of Japan 2011-11, Vol.80 (11), p.114602-114602-5
Main Authors: Yamashita, Kohei, Hirashima, Dai S
Format: Article
Language:English
Subjects:
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Materials science
Nanoscale materials and structures: fabrication and characterization
Nanotubes
Physics
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Summary:Dimer formation by He atoms confined in a narrow tube is studied and the effect of adsorption potential is clarified. The results are well explained in terms of the effective radius $\langle \rho \rangle$ and the width of the single-particle ground-state wave function $\Delta\rho$. For 3 He, adsorption potential promotes dimer formation when $\langle \rho\rangle \lesssim 3$ $Å$, but is unfavorable when $\langle \rho \rangle \gtrsim 3$ $Å$. We discuss the recent experimental results for 3 He atoms confined in nanopores in light of the present results.
ISSN:0031-9015
1347-4073
DOI:10.1143/JPSJ.80.114602