Room temperature Peierls distortion in small radius nanotubes
Abstract
By means of ab initio simulations, we investigate the phonon band structure and electron-phonon coupling in small 4- diameter nanotubes. We show that both the C(5,0) and C(3,3) tubes undergo above room temperature a Peierls transition mediated by an acoustical long-wavelength and an optical q=2kF phonons respectively. In the armchair geometry, we verify that the electron-phonon coupling parameter λ originates mainly from phonons at q=2kF and is strongly enhanced when the diameter decreases. These results question the origin of superconductivity in small diameter nanotubes.
Turn this paper into a full lesson
ArcXiv compiles a staged curriculum from this paper: 8-12 lessons across beginner → advanced, synthesised section guides, visuals, flashcards, a quiz, exercises, and on-demand deep dives per section. Grounded in the abstract, never invented.