Catching the Bound States in the Continuum of a Phantom Atom in Graphene
Strongly Correlated Electrons
2015-07-13 v2 Mesoscale and Nanoscale Physics
Abstract
We explore theoretically the formation of bound states in the continuum (BICs) in graphene hosting two collinear adatoms situated at different sides of the sheet and at the center of the hexagonal cell, where a phantom atom of a fictitious lattice emulates the six carbons of the cell. We verify that in this configuration the local density of states (LDOS) near the Dirac points exhibits two characteristic features: i) the cubic dependence on energy instead of the linear one for graphene as found in New J. Phys. 16, 013045 (2014) and ii) formation of BICs as aftermath of a Fano destructive interference assisted by the Coulomb correlations in the adatoms. For the geometry where adatoms are collinear to carbon atoms, we report absence of BICs.
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Cite
@article{arxiv.1503.01451,
title = {Catching the Bound States in the Continuum of a Phantom Atom in Graphene},
author = {L. H. Guessi and R. S. Machado and Y. Marques and L. S. Ricco and K. Kristinsson and M. Yoshida and I. A. Shelykh and M. de Souza and A. C. Seridonio},
journal= {arXiv preprint arXiv:1503.01451},
year = {2015}
}