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Title: Dispersionless propagation of electron wavepackets in single-walled carbon nanotubes

We investigate the propagation of electron wavepackets in single-walled carbon nanotubes via a Lindblad-based density-matrix approach that enables us to account for both dissipation and decoherence effects induced by various phonon modes. We show that, while in semiconducting nanotubes the wavepacket experiences the typical dispersion of conventional materials, in metallic nanotubes its shape remains essentially unaltered, even in the presence of the electron-phonon coupling, up to micron distances at room temperature.
Authors:
;  [1] ;  [1] ;  [2]
  1. Department of Applied Science and Technology, Politecnico di Torino C.so Duca degli Abruzzi 24, 10129 Torino (Italy)
  2. (Italy)
Publication Date:
OSTI Identifier:
22412579
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 24; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CARBON NANOTUBES; DENSITY MATRIX; DISPERSION RELATIONS; ELECTRON-PHONON COUPLING; ELECTRONS; PHONONS; TEMPERATURE RANGE 0273-0400 K; WAVE PACKETS