title: Scattering of plasmons at the intersection of two metallic nanotubes: implications for tunneling.
abstract: We study theoretically the plasmon scattering at the intersection of two metallic carbon nanotubes. We demonstrate that, for a small angle of crossing theta<<1, the transmission coefficient is an oscillatory function of lambda/theta, where lambda is the interaction parameter of the Luttinger liquid in an individual nanotube. We calculate the tunnel density of states nu(omega,x) as a function of energy omega and distance x from the intersection. In contrast with a single nanotube, we find that, in the geometry of crossed nanotubes, conventional "rapid" oscillations in nu(omega,x) due to the plasmon scattering acquire an aperiodic "slow-breathing" envelope which has lambda/theta nodes.
authors.affiliation: Department of Physics, University of Utah, Salt Lake City, Utah 84112, USA.
authors.forename: V V
authors.initials: VV
authors.lastname: Mkhitaryan
authors.forename: Y
authors.initials: Y
authors.lastname: Fang
authors.forename: J M
authors.initials: JM
authors.lastname: Gerton
authors.forename: E G
authors.initials: EG
authors.lastname: Mishchenko
authors.forename: M E
authors.initials: ME
authors.lastname: Raikh