Coulomb drag shot noise in coupled Luttinger liquids

Details Coulomb drag shot noise in coupled Luttinger liquids Coulomb drag shot noise in coupled Luttinger liquids

2001-09-03

arxiv.org/abs/cond-mat/0109022v2

Phys. Rev. Lett. 88, 116401 (2002)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages Revtex, accepted for publication in PRL

Scientific paper

10.1103/PhysRevLett.88.116401

Coulomb drag shot noise has been studied theoretically for 1D interacting electron systems, which are realized e.g. in single-wall nanotubes. We show that under adiabatic coupling to external leads, the Coulomb drag shot noise of two coupled or crossed nanotubes contains surprising effects, in particular a complete locking of the shot noise in the tubes. In contrast to Coulomb drag of the average current, the noise locking is based on a symmetry of the underlying Hamiltonian and is not limited to asymptotically small energy scales.

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