TY - JOUR
T1 - Diameter dependence of carbon nanotube thermal conductivity and extension to the graphene limit
AU - Lindsay, L.
AU - Broido, D. A.
AU - Mingo, Natalio
PY - 2010/10/5
Y1 - 2010/10/5
N2 - Using an exact numerical solution of the phonon Boltzmann equation, we demonstrate a nontrivial evolution with diameter of the intrinsic lattice thermal conductivity, κ, of a wide range of achiral and chiral single-walled carbon nanotubes (SWCNTs) into that of graphene, κgraphene. We find that κ< κgraphene for all but the smallest diameter SWCNTs and that κ exhibits a minimum for modest diameters. This behavior results because the inherent curvature in SWCNTs violates a selection rule in graphene arising from its reflection symmetry, which strongly restricts phonon-phonon scattering in that system.
AB - Using an exact numerical solution of the phonon Boltzmann equation, we demonstrate a nontrivial evolution with diameter of the intrinsic lattice thermal conductivity, κ, of a wide range of achiral and chiral single-walled carbon nanotubes (SWCNTs) into that of graphene, κgraphene. We find that κ< κgraphene for all but the smallest diameter SWCNTs and that κ exhibits a minimum for modest diameters. This behavior results because the inherent curvature in SWCNTs violates a selection rule in graphene arising from its reflection symmetry, which strongly restricts phonon-phonon scattering in that system.
UR - http://www.scopus.com/inward/record.url?scp=78149272798&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.82.161402
DO - 10.1103/PhysRevB.82.161402
M3 - Article
AN - SCOPUS:78149272798
SN - 1098-0121
VL - 82
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 16
M1 - 161402
ER -