Fate of topological states in incommensurate generalized Aubry-Andr\'e models
| Autor: | Cestari, J. C. C., Foerster, A., Gusmão, M. A. |
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| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | Phys. Rev. B 93 (2016) 205441 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevB.93.205441 |
| Popis: | We study one-dimensional optical lattices described by generalized Aubry-Andr\'e models that include both commensurate and incommensurate modulations of the hopping amplitude. This brings together two interesting features of this class of systems: Anderson localization and the existence of topological edge states. We follow changes of the single-particle energy spectrum induced by variations of the system parameters, with focus on the survival of topological states in the localized regime. Comment: 5 pages, 5 figures |
| Databáze: | arXiv |
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