TY - JOUR
T1 - van der Waals interaction in nanotube bundles
T2 - consequences on vibrational modes.
AU - Henrard, Luc
AU - Hernandez, E.
AU - Bernier, P.
AU - Rubio, A.
PY - 1999
Y1 - 1999
N2 - We have developed a pair-potential approach for the evaluation of van der Waals interaction between carbon nanotubes in bundles. Starting from a continuum model, we show that the intertube modes range from 5 cm−1 to 60 cm−1. Using a nonorthogonal tight-binding approximation for describing the covalent intratube bonding in addition, we confirm a slight chiral dependence of the breathing mode frequency and we found that this breathing mode frequency increases by ∼10% if the nanotube lies inside a bundle as compared to inside the isolated tube.
AB - We have developed a pair-potential approach for the evaluation of van der Waals interaction between carbon nanotubes in bundles. Starting from a continuum model, we show that the intertube modes range from 5 cm−1 to 60 cm−1. Using a nonorthogonal tight-binding approximation for describing the covalent intratube bonding in addition, we confirm a slight chiral dependence of the breathing mode frequency and we found that this breathing mode frequency increases by ∼10% if the nanotube lies inside a bundle as compared to inside the isolated tube.
U2 - 10.1103/PhysRevB.60.R8521
DO - 10.1103/PhysRevB.60.R8521
M3 - Article
SN - 1098-0121
VL - 60
JO - Physical Review. B, Condensed Matter and Materials Physics
JF - Physical Review. B, Condensed Matter and Materials Physics
IS - 12
ER -