Trapped modes in armchair graphene nanoribbons
Zapiski Nauchnykh Seminarov POMI, Mathematical problems in the theory of wave propagation. Part 49, Tome 483 (2019), pp. 85-115
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We study scattering on an ultra-low potential in armchair graphene nanoribbon. Using the continuous Dirac model and including a couple of artificial waves in the scattering process, described by an augumented scattering matrix, we derive a condition for the existence of a trapped mode. We consider the threshold energies, where multiplicity of the continuous spectrum changes and show that a trapped mode may appear for energies slightly less than a threshold and its multiplicity does not exceed one. For energies which are higher than a threshold, there are no trapped modes, provided that the potential is sufficiently small.
@article{ZNSL_2019_483_a6,
author = {V. A. Kozlov and S. A. Nazarov and A. Orlof},
title = {Trapped modes in armchair graphene nanoribbons},
journal = {Zapiski Nauchnykh Seminarov POMI},
pages = {85--115},
publisher = {mathdoc},
volume = {483},
year = {2019},
language = {en},
url = {http://geodesic.mathdoc.fr/item/ZNSL_2019_483_a6/}
}
V. A. Kozlov; S. A. Nazarov; A. Orlof. Trapped modes in armchair graphene nanoribbons. Zapiski Nauchnykh Seminarov POMI, Mathematical problems in the theory of wave propagation. Part 49, Tome 483 (2019), pp. 85-115. http://geodesic.mathdoc.fr/item/ZNSL_2019_483_a6/