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Vacuum polarization in graphene with a topological defect

Vacuum polarization in graphene with a topological defect

The influence of a topological defect in graphene on the ground state of electronic quasiparticle excitations is studied in the framework of the long-wavelength continuum model originating in the tightbinding approximation for the nearest neighbour interaction in the graphitic lattice. Atopologica...

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Main Authors: Sitenko, Yu.A., Vlasii, N.D.
Format: Article
Language:English
Published: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2008
Series:Физика низких температур
Subjects:
Graphene and graphite multilayers
Online Access:http://dspace.nbuv.gov.ua/handle/123456789/117562
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spelling irk-123456789-1175622017-05-25T03:03:36Z Vacuum polarization in graphene with a topological defect Sitenko, Yu.A. Vlasii, N.D. Graphene and graphite multilayers The influence of a topological defect in graphene on the ground state of electronic quasiparticle excitations is studied in the framework of the long-wavelength continuum model originating in the tightbinding approximation for the nearest neighbour interaction in the graphitic lattice. Atopological defect that rolls up a graphitic sheet into a nanocone is represented by a pointlike pseudomagnetic vortex with a flux which is related to the deficit angle of the cone. The method of self-adjoint extensions is employed to define the set of physically acceptable boundary conditions at the apex of the nanocone. The electronic system on a graphitic nanocone is found to acquire the ground state condensate and current of special type, and we determine the dependence of these quantities on the deficit angle of the nanocone, continuous parameter of the boundary condition at the apex, and the distance from the apex. 2008 Article Vacuum polarization in graphene with a topological defect / Yu.A. Sitenko, N.D. Vlasii // Физика низких температур. — 2008. — Т. 34, № 10. — С. 1049-1057. — Бібліогр.: 20 назв. — англ. 0132-6414 PACS: 11.10.–z;73.43.Cd;73.61.Wp;81.05.Uw http://dspace.nbuv.gov.ua/handle/123456789/117562 en Физика низких температур Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
collection DSpace DC
language English
topic Graphene and graphite multilayers
Graphene and graphite multilayers
spellingShingle Graphene and graphite multilayers
Graphene and graphite multilayers
Sitenko, Yu.A.
Vlasii, N.D.
Vacuum polarization in graphene with a topological defect
Физика низких температур
description The influence of a topological defect in graphene on the ground state of electronic quasiparticle excitations is studied in the framework of the long-wavelength continuum model originating in the tightbinding approximation for the nearest neighbour interaction in the graphitic lattice. Atopological defect that rolls up a graphitic sheet into a nanocone is represented by a pointlike pseudomagnetic vortex with a flux which is related to the deficit angle of the cone. The method of self-adjoint extensions is employed to define the set of physically acceptable boundary conditions at the apex of the nanocone. The electronic system on a graphitic nanocone is found to acquire the ground state condensate and current of special type, and we determine the dependence of these quantities on the deficit angle of the nanocone, continuous parameter of the boundary condition at the apex, and the distance from the apex.
format Article
author Sitenko, Yu.A.
Vlasii, N.D.
author_facet Sitenko, Yu.A.
Vlasii, N.D.
author_sort Sitenko, Yu.A.
title Vacuum polarization in graphene with a topological defect
title_short Vacuum polarization in graphene with a topological defect
title_full Vacuum polarization in graphene with a topological defect
title_fullStr Vacuum polarization in graphene with a topological defect
title_full_unstemmed Vacuum polarization in graphene with a topological defect
title_sort vacuum polarization in graphene with a topological defect
publisher Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
publishDate 2008
topic_facet Graphene and graphite multilayers
url http://dspace.nbuv.gov.ua/handle/123456789/117562
citation_txt Vacuum polarization in graphene with a topological defect / Yu.A. Sitenko, N.D. Vlasii // Физика низких температур. — 2008. — Т. 34, № 10. — С. 1049-1057. — Бібліогр.: 20 назв. — англ.
series Физика низких температур
work_keys_str_mv AT sitenkoyua vacuumpolarizationingraphenewithatopologicaldefect
AT vlasiind vacuumpolarizationingraphenewithatopologicaldefect
first_indexed 2023-10-18T20:30:06Z
last_indexed 2023-10-18T20:30:06Z
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