Symmetry constraints on phonon dispersion in graphene
نویسندگان
چکیده
منابع مشابه
Lenosky’s energy and the phonon dispersion of graphene
We calculate the phonon spectrum for a graphene sheet resulting from the model proposed by Lenosky et al. Nature London 355, 333 1992 for the free energy of the lattice. This model takes into account not only the usual bond-bending and stretching terms, but it also captures the possible misalignment of the pz orbitals. We compare our results with previous models used in the literature and with ...
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ژورنال
عنوان ژورنال: Physics Letters A
سال: 2008
ISSN: 0375-9601
DOI: 10.1016/j.physleta.2008.05.085