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Stability of the Tomonaga-Luttinger liquid state in gamma-irradiated carbon nanotube bundles
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2013 (English)In: Journal of Physics: Condensed Matter, ISSN 0953-8984, E-ISSN 1361-648X, Vol. 25, no 47, 475302- p.Article in journal (Refereed) Published
Abstract [en]

We report experimental results for the changes in conductivity of single-wall carbon nanotube bundles when irradiated by Co-60 gamma-rays in various environments. In the current study the samples investigated were irradiated in hermetic cells, either evacuated (0.1 Pa) or filled with hydrogen or deuterium at atmospheric pressure. In situ measurements of the resistance change as a function of irradiation dose at room temperature are presented. It was found that, for all irradiation conditions, the normalized resistance versus irradiation dose demonstrates a logarithmic behaviour. A phenomenological model for the observed dependence is derived. The current-voltage characteristics of the irradiated samples were measured in the temperature range from 4.5 to 300 K using short (10 ns) electric pulses, and the results demonstrate a scaling behaviour. This scaling occurs in the universal coordinates that correspond to the Tomonaga-Luttinger liquid concept. Our results confirm the existence of the Tomonaga-Luttinger liquid phase up to room temperature in carbon nanotubes after gamma-irradiation to a dose of 5 x10(7) rad in vacuum, 1 : 7 x 10(7) rad in hydrogen and 1 : 24 x 10(8) rad in deuterium.

Place, publisher, year, edition, pages
Institute of Physics Publishing (IOPP), 2013. Vol. 25, no 47, 475302- p.
Keyword [en]
Conductivity, Lüttinger liquid, single wall carbon nanotubes, gamma-ray irradiation, low temperature
National Category
Condensed Matter Physics
Research subject
Physics
Identifiers
URN: urn:nbn:se:umu:diva-84114DOI: 10.1088/0953-8984/25/47/475302ISI: 000326929300007OAI: oai:DiVA.org:umu-84114DiVA: diva2:680418
Funder
Swedish Research Council, 621-2010-3732
Available from: 2013-12-18 Created: 2013-12-16 Last updated: 2017-12-06Bibliographically approved

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Danilchenko 2013(765 kB)135 downloads
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Sundqvist, Bertil

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