Electronic spectra of commensurate and incommensurate DWNTs in parallel magnetic field - Condensed Matter > Mesoscale and Nanoscale PhysicsReportar como inadecuado




Electronic spectra of commensurate and incommensurate DWNTs in parallel magnetic field - Condensed Matter > Mesoscale and Nanoscale Physics - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Abstract: We study the electronic spectra of commensurate and incommensuratedouble-wall carbon nanotubes DWNTs of finite length. The coupling betweennanotube shells is taken into account as an intershell electron tunneling.Selection rules for the intershell coupling are derived. Due to the finite sizeof the system, these rules do not represent exact conservation of the crystalmomentum, but only an approximate one; therefore the coupling betweenlongitudinal momentum states in incommensurate DWNTs becomes possible. The useof the selection rules allows a fast and efficient calculation of theelectronic spectrum. In the presence of a magnetic field parallel to the DWNTaxis we find spectrum modulations which depend on the chiralities of theshells.



Autor: Magdalena Marganska, Shidong Wang, Milena Grifoni

Fuente: https://arxiv.org/







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