Electron-phonon coupling and Peierls transition in metallic carbon nanotubes

2019-11-06 02:30:33

temperature transition metallic phonon Peierls

责任者: Sedeki, A.;Caron, L.G.;Bourbonnais, C. 单位: Centre de Recherche en Phys. du Solide, Sherbrooke Univ., Que., Canada 来源出处: Physical Review B (Condensed Matter)(Phys. Rev. B, Condens. Matter (USA)),15 Sept. 2000,62(11):6975-8 摘要: We reexamine the putative Peierls transition in a (5,5) metallic nanotube. We show that the conduction electrons at the Fermi level do not couple to the longitudinal acoustic phonon but rather to a folded-in graphene zone edge phonon having the proper Kékulé modulation symmetry. The calculation for the mean-field transition temperature gives 15 K, a value comparable to previous estimates. We discuss the significance of this transition temperature 关键词: carbon nanotubes;electron-phonon interactions;Peierls instability;metallic carbon nanotubes;Peierls transition;electron-phonon coupling;(5,5) metallic nanotube;folded-in graphene zone edge phonon;Kekule modulation symmetry;mean-field transition temperature;transition temperature;C