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Tomonaga-Luttinger liquids and Coulomb blockade in multiwall carbon nanotubes under pressure

M. Monteverde·M. Nunez-Regueiro·G. Garbarino·C. Acha·X. Jing·L. Lu·Z. W. Pan·S. S. Xie·J. Souletie·R. Egger
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Abstract

We report that the conductance of macroscopic multiwall nanotube (MWNT) bundles under pressure shows power laws in temperature and voltage, as corresponding to a network of bulk-bulk connected Tomonaga-Luttinger Liquids (LL). Contrary to individual MWNT, where the observed power laws are attributed to Coulomb blockade, the measured ratio for the end and bulk obtained exponents, ~2.4, can only be accounted for by LL theory. At temperatures characteristic of interband separation, it increases due to thermal population of the conducting sheets unoccupied bands.

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M. Monteverde, M. Nunez-Regueiro, G. Garbarino, C. Acha, X. Jing, L. Lu, Z. W. Pan, S. S. Xie, J. Souletie, R. Egger. 2006-09-27. Tomonaga-Luttinger liquids and Coulomb blockade in multiwall carbon nanotubes under pressure. https://doi.org/10.1103/physrevlett.97.176401

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