Signatures of Dynamic Screening in Interfacial Thermal Transport of Graphene

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dc.contributor.authorOng, Zhun-Yongen_US
dc.contributor.authorFischetti, Massimo V.en_US
dc.contributor.authorSerov, Andrey Y.en_US
dc.contributor.authorPop, Ericen_US
dc.contributor.utdAuthorFischetti, Massimo V.
dc.date.accessioned2014-09-04T15:30:21Z
dc.date.available2014-09-04T15:30:21Z
dc.date.created2013-05-03
dc.description.abstractThe interaction between graphene and various substrates plays an important and limiting role on the behavior of graphene films and devices. Here we uncover that dynamic screening of so-called remote substrate phonons (RPs) has a significant effect on the thermal coupling at the graphene-substrate interface. We calculate the thermal conductance hRP between graphene electrons and substrate, and its dependence on carrier density and temperature for SiO₂, HfO₂, h-BN, and Al₂O₃ substrates. The dynamic screening of RPs leads to one order of magnitude or more decrease in hRP and a change in its dependence on carrier density. Dynamic screening predicts a decrease of ~1 MW K⁻¹ m⁻² while static screening predicts a rise of ~10 MW K⁻¹ m⁻² when the carrier density in Al₂O₃-supported graphene is increased from 10¹² to 10¹³ cm⁻².en_US
dc.description.sponsorshipNSF CAREER award 09-54423en_US
dc.identifier.citationZhun-Yong Ong, Fischetti, M. V., Serov,A. Y. and Pop, Eric. 2013. "Signatures of dynamic screening in interfacial thermal transport of grapheme." Physical Review B: Condensed Matter & Materials Physics 87(19), doi:10.1103/PhysRevB.87.195404)en_US
dc.identifier.issn1098-0121en_US
dc.identifier.issue195404en_US
dc.identifier.urihttp://hdl.handle.net/10735.1/3954
dc.identifier.volume87en_US
dc.relation.urihttp://dx.doi.org/10.1103/PhysRevB.87.195404en_US
dc.rights©2013 American Physical Societyen_US
dc.source.journalPhysical Review B: Condensed Matter & Materials Physicsen_US
dc.subjectPhononsen_US
dc.subjectGrapheneen_US
dc.subjectSilicaen_US
dc.titleSignatures of Dynamic Screening in Interfacial Thermal Transport of Grapheneen_US
dc.type.genrearticleen_US

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