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Title
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Theoretical phonon dispersions in monolayers and multilayers of hexagonal boron-nitride
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Author
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Abstract
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| Starting from an empirical force constant model of valence interactions and calculating by Ewald's method the electrostatic force constants, we derive the dynamical matrix for a monolayer and for multilayer systems of hexagonal boron nitride (h-BN). Solution of the secular problem leads to the corresponding phonon dispersion relations. The interplay between valence forces and Coulomb forces is discussed. A comparison with previous results on graphene and graphene multilayers is made. Our spectra on the h-BN monolayer are rather similar to previous ab initio theory results. Comparison is also made with Raman and infrared experimental results. |
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Language
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English
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Source (journal)
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Physica status solidi: B: basic research. - Berlin
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Publication
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Berlin
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2009
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ISSN
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0370-1972
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Volume/pages
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246
:11/12
(2009)
, p. 2802-2805
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ISI
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000272904100091
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Full text (Publisher's DOI)
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