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

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

2006-09-27

arxiv.org/abs/cond-mat/0609690v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

16 pages, 3 Figures, .pdf. Accepted in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.97.176401

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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