Please use this identifier to cite or link to this item: https://doi.org/10.1209/0295-5075/103/64002
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dc.titleNonlinearity enhanced interfacial thermal conductance and rectification
dc.contributor.authorZhang, L.
dc.contributor.authorThingna, J.
dc.contributor.authorHe, D.
dc.contributor.authorWang, J.-S.
dc.contributor.authorLi, B.
dc.date.accessioned2014-10-16T09:34:16Z
dc.date.available2014-10-16T09:34:16Z
dc.date.issued2013-09
dc.identifier.citationZhang, L., Thingna, J., He, D., Wang, J.-S., Li, B. (2013-09). Nonlinearity enhanced interfacial thermal conductance and rectification. EPL 103 (6) : -. ScholarBank@NUS Repository. https://doi.org/10.1209/0295-5075/103/64002
dc.identifier.issn02955075
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/97352
dc.description.abstractWe study the nonlinear interfacial thermal transport across atomic junctions by the quantum self-consistent mean-field (QSCMF) theory based on the nonequilibrium Green's function approach; the QSCMF theory we propose is very precise and matches well with the exact results from quantum master equation. The nonlinearity at the interface is studied by effective temperature-dependent interfacial coupling calculated from the QSCMF theory. We find that nonlinearity can provide an extra channel for phonon transport in addition to the phonon scattering which usually blocks heat transfer. For weak linearly coupled interface, the nonlinearity can enhance the interfacial thermal transport; with increasing nonlinearity or temperature, the thermal conductance shows nonmonotonical behavior. The interfacial nonlinearity also induces thermal rectification, which depends on the mismatch of the two leads and also the interfacial linear coupling. © Copyright EPLA, 2013.
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentPHYSICS
dc.description.doi10.1209/0295-5075/103/64002
dc.description.sourcetitleEPL
dc.description.volume103
dc.description.issue6
dc.description.page-
dc.identifier.isiut000326280200015
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