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Low Temperature Physics / Volume 36 / Issue 7 / NANOSTRUCTURES AT LOW TEMPERATURES

Low Temp. Phys. 36, 635 (2010); http://dx.doi.org/10.1063/1.3479333 (3 pages)

Quantum effects in the radial thermal expansion of bundles of single-walled carbon nanotubes doped with 4He

A. V. Dolbin1, V. B. Esel’son1, V. G. Gavrilko1, V. G. Manzhelii1, N. A. Vinnikov1, S. N. Popov1, and B. Sundqvist2

1B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, 47 Lenin Ave., Kharkov 61103, Ukraine
2Department of Physics, Umea University, SE-901 87 Umea, Sweden

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The radial thermal expansion αr of bundles of single-walled carbon nanotubes saturated with 4He impurities to the molar concentration 9.4% has been investigated in the interval 2.5–9.5 K using the dilatometric method. In the interval 2.1–3.7 K αr is negative and is several times higher than the negative αr for pure nanotube bundles. Most likely this points to 4He atom tunneling between different positions in the nanotube bundle system. The excess expansion was reduced with decreasing 4He concentration.

© 2010 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. EXPERIMENTAL TECHNIQUE
  3. RESULTS AND DISCUSSION

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KEYWORDS and PACS

Keywords

carbon nanotubes, extensometers, helium, thermal expansion, tunnelling

PACS

  • 65.80.-g

    Thermal properties of small particles, nanocrystals, nanotubes, and other related systems

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3479333

PUBLICATION DATA

ISSN

1063-777X (print)  
1090-6517 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    P. K. Schelling and P. Keblinski, Phys. Rev. B 68, 035425 (2003).

    N. Bendiab, R. Almairac, J. Sauvajol, and S. Rols, J. Appl. Phys. 93, 1769 (2002)JAPIAU000093000003001769000001.


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