Pressure variation of Luttinger liquid parameters in single wall carbon nanotubes networks

F. Morales, M. Monteverde and M. Núñez-Regueiro ()

The European Physical Journal B: Condensed Matter and Complex Systems, 2008, vol. 65, issue 4, 511-514

Abstract: We measure electrical transport on networks of single wall nanotube of different origin as a function of temperature T, voltage V and pressure P. We observe Luttinger liquid (LL) behavior, a conductance ∝T α and a dynamic conductance ∝V α . We observe a sample dependent P variation of the α parameters, interpreted as Fermi level changes due to pressure induced charge transfer. We show how, through standard four-leads and crossed configuration methods, it is possible to determine α bulk and α end , respectively. We study and discuss the pressure and doping level dependences of the number of channels N, the LL parameter g and the intra-rope tube-tube coupling constant U within a phenomenological model. Copyright Springer 2008

Keywords: 61.46.Fg Nanotubes; 62.50.-p High-pressure effects in solids and liquids (search for similar items in EconPapers)
Date: 2008
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DOI: 10.1140/epjb/e2008-00364-9

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