Please use this identifier to cite or link to this item: https://doi.org/10.1088/0953-8984/23/30/305402
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dc.titleThe phonon Hall effect: Theory and application
dc.contributor.authorZhang, L.
dc.contributor.authorRen, J.
dc.contributor.authorWang, J.-S.
dc.contributor.authorLi, B.
dc.date.accessioned2014-10-16T09:45:36Z
dc.date.available2014-10-16T09:45:36Z
dc.date.issued2011-08-03
dc.identifier.citationZhang, L., Ren, J., Wang, J.-S., Li, B. (2011-08-03). The phonon Hall effect: Theory and application. Journal of Physics Condensed Matter 23 (30) : -. ScholarBank@NUS Repository. https://doi.org/10.1088/0953-8984/23/30/305402
dc.identifier.issn09538984
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/98309
dc.description.abstractWe present a systematic theory of the phonon Hall effect in a ballistic crystal lattice system, and apply it on the kagome lattice which is ubiquitous in various real materials. By proposing a proper second quantization for the non-Hermitian in the polarization-vector space, we obtain a new heat current density operator with two separate contributions: the normal velocity responsible for the longitudinal phonon transport, and the anomalous velocity manifesting itself as the Hall effect of transverse phonon transport. As exemplified in kagome lattices, our theory predicts that the direction of Hall conductivity at low magnetic field can be reversed by tuning the temperatures, which we hope can be verified by experiments in the future. Three phonon-Hall-conductivity singularities induced by phonon-band-topology change are discovered as well, which correspond to the degeneracies at three different symmetric center points, Γ, K, X, in the wavevector space of the kagome lattice. © 2011 IOP Publishing Ltd.
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentPHYSICS
dc.description.doi10.1088/0953-8984/23/30/305402
dc.description.sourcetitleJournal of Physics Condensed Matter
dc.description.volume23
dc.description.issue30
dc.description.page-
dc.description.codenJCOME
dc.identifier.isiut000292930800010
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