Geometrical effects on the thermoelectric properties of ballistic graphene antidot lattices

An Investigation of the Geometrical Effects on the Thermal Conductivity of Graphene Antidot Lattices

In this work we investigate the thermal conductivity of graphene-based antidot lattices. A third nearest-neighbor tight-binding model and a forth nearest-neighbor force constant model are employed to study the electronic and phononic band structures of graphene-based antidot lattices. Ballistic transport models are used to evaluate the electronic and the thermal conductivities. Methods to reduc...

Coherent thermoelectric transport in single, double, and U-bend structures

Articles you may be interested in Ballistic thermoelectric properties in boron nitride nanoribbons Geometrical effects on the thermoelectric properties of ballistic graphene antidot lattices Acoustic phonon transport and ballistic thermal conductance through a three-dimensional double-bend quantum structure J. Coherent, i.e., ballistic, thermoelectric transport in electron waveguide structures ...

Study of thermal properties of graphene-based structures using the force constant method

The thermal properties of graphene-based materials are theoretically investigated. The fourth-nearest neighbor force constant method for phonon properties is used in conjunction with both the Landauer ballistic and the nonequilibrium Green’s function techniques for transport. Ballistic phonon transport is investigated for different structures including graphene, graphene antidot lattices, and g...

Density functional study of graphene antidot lattices: Roles of geometrical relaxation and spin

Polaronic signatures and spectral properties of graphene antidot lattices

We explore the consequences of electron-phonon (e-ph) coupling in graphene antidot lattices (graphene nanomeshes), i.e., triangular superlattices of circular holes (antidots) in a graphene sheet. They display a direct band gap whose magnitude can be controlled via the antidot size and density. The relevant coupling mechanism in these semiconducting counterparts of graphene is the modulation of ...