2008/06/30 by V. V. Mkhitaryan, Y. Fang, Yuanzhang Fang +5
Materials Science · Physics and Astronomy · #Carbon Nanotubes in Composites #Graphene research and applications #Mechanical and Optical Resonators #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevlett.101.256401
published as Phys. Rev. Lett. 101, 256401 (2008) · 4 pages, 2 figures (revised version)
openalex publication_date 2008/12/18 · arxiv created 2009/01/08 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We study theoretically the plasmon scattering at the intersection of two metallic carbon nanotubes. We demonstrate that, for a small angle of crossing \ensuremathθ\ensuremath≪1, the transmission coefficient is an oscillatory function of \ensuremathλ/\ensuremathθ, where \ensuremathλ is the interaction parameter of the Luttinger liquid in an individual nanotube. We calculate the tunnel density of states \ensuremathν(\ensuremathω,x) as a function of energy \ensuremathω 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 \ensuremathν(\ensuremathω,x) due to the plasmon scattering acquire an aperiodic ``slow-breathing'' envelope which has \ensuremathλ/\ensuremathθ nodes.