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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| Опубліковано в: : | Физика низких температур |
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| Дата: | 2008 |
| Автори: | , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2008
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| Онлайн доступ: | https://nasplib.isofts.kiev.ua/handle/123456789/117562 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | 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. |
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nasplib_isofts_kiev_ua-123456789-117562 |
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Sitenko, Yu.A. Vlasii, N.D. 2017-05-24T18:35:06Z 2017-05-24T18:35:06Z 2008 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 https://nasplib.isofts.kiev.ua/handle/123456789/117562 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. We would like to thank V.P. Gusynin for stimulating discussions. The work of Yu.A. S. was supported by grant No. 10/07-N «Nanostructure systems, nanomaterials, nanotechnologies» of the National Academy of Sciences of Ukraine and grant No. 05-1000008-7865 of the INTAS. We acknowledge the partial support of the Department of Physics and Astronomy of the National Academy of Sciences of Ukraine under Special program «Fundamental properties of physical systems in extremal conditions» and the Swiss National Science Foundation under the SCOPES project No. IB7320-110848. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Graphene and graphite multilayers Vacuum polarization in graphene with a topological defect Article published earlier |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| title |
Vacuum polarization in graphene with a topological defect |
| spellingShingle |
Vacuum polarization in graphene with a topological defect Sitenko, Yu.A. Vlasii, N.D. Graphene and graphite multilayers |
| 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 |
| author |
Sitenko, Yu.A. Vlasii, N.D. |
| author_facet |
Sitenko, Yu.A. Vlasii, N.D. |
| topic |
Graphene and graphite multilayers |
| topic_facet |
Graphene and graphite multilayers |
| publishDate |
2008 |
| language |
English |
| container_title |
Физика низких температур |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| format |
Article |
| 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.
|
| issn |
0132-6414 |
| url |
https://nasplib.isofts.kiev.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. |
| work_keys_str_mv |
AT sitenkoyua vacuumpolarizationingraphenewithatopologicaldefect AT vlasiind vacuumpolarizationingraphenewithatopologicaldefect |
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2025-12-07T20:31:04Z |
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2025-12-07T20:31:04Z |
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1850882878714413056 |