Dispersionless propagation of electron wavepackets in single-walled carbon nanotubes

Journal Article · Mon Jun 15 00:00:00 EDT 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4922739· OSTI ID:22412579

Rosati, Roberto; Rossi, Fausto ^[1]; Dolcini, Fabrizio ^[1]

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1. Department of Applied Science and Technology, Politecnico di Torino C.so Duca degli Abruzzi 24, 10129 Torino (Italy)

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.

• OSTI ID: 22412579
• Journal Information: Applied Physics Letters, Vol. 106, Issue 24; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

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