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

Details Pressure variation of Luttinger liquids parameters in single wall carbon nanotubes networks Pressure variation of Luttinger liquids parameters in single wall carbon nanotubes networks

2006-07-17

arxiv.org/abs/cond-mat/0607410v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

13 pages, 4 figures

Scientific paper

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^alpha and a dynamic conductance V^alpha . We observe a sample dependent P variation of the alpha 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 alpha_bulk and alpha_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 .

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