Carregant...
Fitxers
Tipus de document
ArticleVersió
Versió acceptadaData de publicació
Tots els drets reservats
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/200144
Dimer-covering resonating-valence-bond treatment of single-walled zigzag carbon nanotubes
Títol de la revista
Director/Tutor
ISSN de la revista
Títol del volum
Recurs relacionat
Resum
Single-walled zigzag carbon nanotubes with h hexagons around the carbon nanotube, h ranging from 3 to 19, have been investigated from a resonating-valence-bond point of view. The energies calculated for the undoped h = 3n-1 zigzag carbon nanotubes, n integer, suggest that the two lowest-lying phases are degenerate. Therefore, de-confined low-energy topological spin defects would occur. Then, these carbon nanotubes should be conductors, in analogy to polyacethylene. In clear contrast, no such degeneracy is obtained for either, h = 3n+1 or h = 3n, so bound pairs of topological spin defects are expected to occur in these cases. Our findings provide further insights into electron correlation and exchange effects in carbon nanotubes.
Citació
Citació
GARCÍA BACH, Ma. de los ángeles. Dimer-covering resonating-valence-bond treatment of single-walled zigzag carbon nanotubes. _European Physical Journal B_. 2011. Vol. 80, núm. 469-475. [consulta: 28 de gener de 2026]. ISSN: 1434-6028. [Disponible a: https://hdl.handle.net/2445/200144]