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Effects of domains in phonon conduction through hybrid boron nitride and graphene sheets

AutorSevinçli, Haldun; Li, Wu; Mingo, N.; Cuniberti, Gianaurelio; Roche, Stephan
Fecha de publicación2011
EditorAmerican Physical Society
CitaciónPhysical Review B 84(20): 205444 (2011)
ResumenWe theoretically investigate the phonon propagation and thermal conductivity κ in hybrid boron nitride and graphene sheets. By using a real-space Kubo-computational transport scheme, large and disordered graphene structures are simulated, introducing disk-shaped domains with varying sizes of 2 to 8 nm and concentrations ranging from 0% to 100%. A strong influence of the domain size and concentration on the transport properties is obtained. The mean free paths are minimized at 50% domain concentration, and stronger suppression of κ is achieved with smaller domains. It is found to decrease by up to 65% at room temperature when the domain size is 2 nm. These results are beyond the scope of any effective medium approximation. © 2011 American Physical Society.
URIhttp://hdl.handle.net/10261/50959
DOI10.1103/PhysRevB.84.205444
Identificadoresdoi: 10.1103/PhysRevB.84.205444
issn: 1098-0121
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