Armchair graphene nanoribbons: PT-symmetry breaking and exceptional points without dissipation
We consider a single layer graphene nanoribbon with armchair edges in a longitudinally constant external potential and point out that its transport properties can be described by means of an effective non-Hermitian Hamiltonian. We show that this system has some features typical of dissipative system...
| Main Authors: | , , , , |
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| Format: | Journal article |
| Language: | English |
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2011
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| _version_ | 1797099314482249728 |
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| author | Fagotti, M Bonati, C Logoteta, D Marconcini, P Macucci, M |
| author_facet | Fagotti, M Bonati, C Logoteta, D Marconcini, P Macucci, M |
| author_sort | Fagotti, M |
| collection | OXFORD |
| description | We consider a single layer graphene nanoribbon with armchair edges in a longitudinally constant external potential and point out that its transport properties can be described by means of an effective non-Hermitian Hamiltonian. We show that this system has some features typical of dissipative systems, namely the presence of exceptional points and of PT-symmetry breaking, although it is not dissipative. |
| first_indexed | 2024-03-07T05:22:02Z |
| format | Journal article |
| id | oxford-uuid:df3f25a6-7756-4825-968a-bd1338b37524 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T05:22:02Z |
| publishDate | 2011 |
| record_format | dspace |
| spelling | oxford-uuid:df3f25a6-7756-4825-968a-bd1338b375242022-03-27T09:38:08ZArmchair graphene nanoribbons: PT-symmetry breaking and exceptional points without dissipationJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:df3f25a6-7756-4825-968a-bd1338b37524EnglishSymplectic Elements at Oxford2011Fagotti, MBonati, CLogoteta, DMarconcini, PMacucci, MWe consider a single layer graphene nanoribbon with armchair edges in a longitudinally constant external potential and point out that its transport properties can be described by means of an effective non-Hermitian Hamiltonian. We show that this system has some features typical of dissipative systems, namely the presence of exceptional points and of PT-symmetry breaking, although it is not dissipative. |
| spellingShingle | Fagotti, M Bonati, C Logoteta, D Marconcini, P Macucci, M Armchair graphene nanoribbons: PT-symmetry breaking and exceptional points without dissipation |
| title | Armchair graphene nanoribbons: PT-symmetry breaking and exceptional
points without dissipation |
| title_full | Armchair graphene nanoribbons: PT-symmetry breaking and exceptional
points without dissipation |
| title_fullStr | Armchair graphene nanoribbons: PT-symmetry breaking and exceptional
points without dissipation |
| title_full_unstemmed | Armchair graphene nanoribbons: PT-symmetry breaking and exceptional
points without dissipation |
| title_short | Armchair graphene nanoribbons: PT-symmetry breaking and exceptional
points without dissipation |
| title_sort | armchair graphene nanoribbons pt symmetry breaking and exceptional points without dissipation |
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