Published June 15, 2011
| Version v1
Journal article
Armchair graphene nanoribbons: PT-symmetry breaking and exceptional points without dissipation
Creators
- 1. Dipartimento di Fisica, Universita di Pisa and INFN, Largo Pontecorvo 3, I-56127 Pisa (Italy)
- 2. Dipartimento di Ingegneria dell'Informazione, Universita di Pisa, Via Caruso 16, I-56122 Pisa (Italy)
Description
We consider a single-layer graphene nanoribbon with armchair edges and with a longitudinally constant external potential, pointing out that it 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.
Additional details
Identifiers
- DOI
- 10.1103/PhysRevB.83.241406;
- arXiv
- arXiv:1102.2129v3;
Publishing Information
- Journal Title
- Physical Review. B, Condensed Matter and Materials Physics
- Journal Volume
- 83
- Journal Issue
- 24
- Journal Page Range
- p. 241406-241406.4
- ISSN
- 1098-0121
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 43023881
- Subject category
- S77: NANOSCIENCE AND NANOTECHNOLOGY;
- Descriptors DEI
- CARBON; HAMILTONIANS; HONEYCOMB STRUCTURES; LAYERS; NANOSTRUCTURES; SYMMETRY BREAKING
- Descriptors DEC
- ELEMENTS; MATHEMATICAL OPERATORS; MECHANICAL STRUCTURES; NONMETALS; QUANTUM OPERATORS
Optional Information
- Notes
- (c) 2011 American Institute of Physics