Topological effect on thermal conductivity in graphene

Abstract

The topological effect on thermal conductivity is investigated through the comparison among graphene nanoribbons, carbon nanotubes and the Mobius-like graphene strips (MGS), by molecular dynamics simulation. It is found that the thermal conductivity of MGS is less than one half of that of graphene nanoribbons. The underlying mechanism whereby MGS acquire such low thermal conductivity may be attributable to the enhanced phonon-phonon scattering and localization property, which are induced by the nontrivial topology of Mobius strip. Moreover by counting in the dimensions of MGS, a lower length/width ratio reduces its thermal conductivity, as the phonon-phonon scattering and localization within might be further elevated.

accepted by Journal of Applied Physics

References in corpus (8)

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Cited by in corpus (7)

• Thermal transport in nanostructures
• A Review on Flexural Mode of Graphene: Lattice Dynamics, Thermal Conduction, Thermal Expansion, Elasticity, and Nanomechanical Resonance
• Magnetochiral symmetry breaking in a Möbius ring
• The Buckling of Single-Layer MoS2 Under Uniaxial Compression
• Absence of Casimir regime in two-dimensional nanoribbon phonon conduction
• Nontrivial topological states on a Möbius band
• Topological Floquet states on a Möbius band irradiated by circularly polarised light