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Quantum effects in the radial thermal expansion of bundles of single-walled carbon nanotubes doped with 4He
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2010 (English)In: Low temperature physics (Woodbury, N.Y., Print), ISSN 1063-777X, Vol. 36, no 7, 635-637 p.Article in journal (Refereed) Published
Abstract [en]

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. This most likely points to 4He atom tunneling between different positions in the nanotube bundle system. The excess expansion was reduced with decreasing 4He concentration.

Place, publisher, year, edition, pages
Woodbury, N.Y.: American Institute of Physics , 2010. Vol. 36, no 7, 635-637 p.
Keyword [en]
Single-walled carbon nanotubes, SWCNT, thermal expansion, radial thermal expansion, doping, helium, quantum effects
National Category
Condensed Matter Physics
Research subject
URN: urn:nbn:se:umu:diva-34390DOI: 10.1063/1.3479333ISI: 000281735500011OAI: diva2:321161
Simultaneous publication in Fizika Nizkikh Temperatur (Kharkov; ISSN 0132-6414 (Print) 1816-0328 (On-line)) vol. 36, no. 7, pages 797-799 (2010).Available from: 2010-05-28 Created: 2010-05-28 Last updated: 2010-10-01Bibliographically approved

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Sundqvist, Bertil
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Department of Physics
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