Scattering of plasmons at the intersection of two metallic nanotubes: implications for tunneling.
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.
Mkhitaryan
V V
VV
Department of Physics, University of Utah, Salt Lake City, Utah 84112, USA.
Fang
Y
Y
Gerton
J M
JM
Mishchenko
E G
EG
Raikh
M E
ME