Transport and Coulomb drag for two interacting carbon nanotubes

Details Transport and Coulomb drag for two interacting carbon nanotubes Transport and Coulomb drag for two interacting carbon nanotubes

2000-07-27

arxiv.org/abs/cond-mat/0007443v1

Eur. Phys. J. B 19, 271-280 (2001)

Physics

Condensed Matter

Strongly Correlated Electrons

9 pages, 7 figures (eps files)

Scientific paper

10.1007/s100510170336

We study nonlinear transport for two coupled one-dimensional quantum wires or carbon nanotubes described by Luttinger liquid theory. Transport properties are shown to crucially depend on the contact length $L_c$. For a special interaction strength, the problem can be solved analytically for arbitrary $L_c$. For point-like contacts and strong interactions, a qualitatively different picture compared to a Fermi liquid emerges, characterized by zero-bias anomalies and strong dependence on the applied cross voltage. In addition, pronounced Coulomb drag phenomena are important for extended contacts.

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