31 citations · 239 across the 41 of their papers we have counts for
41 papers
On the rank of Z_2-matrices with free entries on the diagonal
Eugene Kogan
For an matrix with entries in denote by the minimal rank of all the matrices obtained by changing some numbers on the main diagonal of . W…
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…
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…
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…
Irradiation-induced broadening of the Raman spectra in monolayer graphene
I. Shlimak, A. Butenko, E. Kogan +1
Broadening of the Raman scattering (RS) spectra was studied in monolayer graphene samples irradiated with various dose of ions followed by annealing of radiation damage at differen…
Linking of three triangles in 3-space
E. Kogan
Two triples of triangles having pairwise disjoint outlines in 3-space are called combinatorially isotopic if one triple can be obtained from the other by a continuous motion during…