31 citations · 239 across the 41 of their papers we have counts for
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cond-mat.mes-hall2020
Symmetry of electron bands in graphene: (nearly) free electron vs. tight-binding
Eugene Kogan, Vyacheslav M. Silkin
We present the symmetry labelling of all electron bands in graphene obtained by combining numerical band calculations and analytical analysis based on group theory. The latter was…
cond-mat.mes-hall2020★ 16 cited
Green's functions and DOS for some 2D lattices
Eugene Kogan, Godfrey Gumbs
In this note we present the Green's functions and density of states for the most frequently encountered 2D lattices: square, triangular, honeycomb, kagome, and Lieb lattice. Though…
cond-mat.mes-hall2020★ 3 cited
Poor man's scaling: Coqblin--Schrieffer model revisited
Eugene Kogan, Zheng Shi
We derive the third-order poor man's scaling equation for a generic Hamiltonian describing a quantum impurity embedded into an itinerant electron gas. We show that the Coqbli…