Pressure control of conducting channels in singlewall nanotube networks

M. Monteverde; M. Nunez-Regueiro

doi:10.1103/physrevlett.94.235501

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Pressure control of conducting channels in singlewall nanotube networks

M. Monteverde·M. Nunez-Regueiro

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Abstract

We measure electrical transport on networks of single wall nanotube ropes as a function of temperature T, voltage V and pressure up to 22GPa. We observe Luttinger liquid (LL) behavior, a conductance ~T^alpha and a dynamic conductance ~V^alpha. With pressure conductance increases while alpha decreases, enabling us to test the theoretical prediction for LL on the alpha dependence of the T and V independent coefficient of the tunneling conductance, and to obtain the high frequency cut-off of LL modes. The possible transition to a fermi liquid at alpha -> 0 is unattainable, as nanotubes collapse to an insulating state at high pressures.

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M. Monteverde, M. Nunez-Regueiro. 2004-11-12. Pressure control of conducting channels in singlewall nanotube networks. https://doi.org/10.1103/physrevlett.94.235501

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