Time Evolution of Floquet States in Graphene
Based on a solution of the Floquet Hamiltonian we have studied the time evolution of electronic states in graphene nanoribbons driven out of equilibrium by time-dependent electromagnetic fields in different regimes of intensity, polarization, and frequency. We show that the time-dependent band struc...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2018-01-01
|
| Series: | Advances in Condensed Matter Physics |
| Online Access: | http://dx.doi.org/10.1155/2018/5703197 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832562975255298048 |
|---|---|
| author | F. Manghi M. Puviani F. Lenzini |
| author_facet | F. Manghi M. Puviani F. Lenzini |
| author_sort | F. Manghi |
| collection | DOAJ |
| description | Based on a solution of the Floquet Hamiltonian we have studied the time evolution of electronic states in graphene nanoribbons driven out of equilibrium by time-dependent electromagnetic fields in different regimes of intensity, polarization, and frequency. We show that the time-dependent band structure contains many unconventional features that are not captured by considering the Floquet eigenvalues alone. By analyzing the evolution in time of the state population we have identified regimes for the emergence of time-dependent edge states responsible for charge oscillations across the ribbon. |
| format | Article |
| id | doaj-art-c6524f94c39c46b5aeac3c364f23a905 |
| institution | Kabale University |
| issn | 1687-8108 1687-8124 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Condensed Matter Physics |
| spelling | doaj-art-c6524f94c39c46b5aeac3c364f23a9052025-02-03T01:21:18ZengWileyAdvances in Condensed Matter Physics1687-81081687-81242018-01-01201810.1155/2018/57031975703197Time Evolution of Floquet States in GrapheneF. Manghi0M. Puviani1F. Lenzini2Dipartimento di Scienze Fisiche, Informatiche e Matematiche, Università di Modena e Reggio Emilia, Via Campi 213/A, I-41125 Modena, ItalyDipartimento di Scienze Fisiche, Informatiche e Matematiche, Università di Modena e Reggio Emilia, Via Campi 213/A, I-41125 Modena, ItalyDipartimento di Scienze Fisiche, Informatiche e Matematiche, Università di Modena e Reggio Emilia, Via Campi 213/A, I-41125 Modena, ItalyBased on a solution of the Floquet Hamiltonian we have studied the time evolution of electronic states in graphene nanoribbons driven out of equilibrium by time-dependent electromagnetic fields in different regimes of intensity, polarization, and frequency. We show that the time-dependent band structure contains many unconventional features that are not captured by considering the Floquet eigenvalues alone. By analyzing the evolution in time of the state population we have identified regimes for the emergence of time-dependent edge states responsible for charge oscillations across the ribbon.http://dx.doi.org/10.1155/2018/5703197 |
| spellingShingle | F. Manghi M. Puviani F. Lenzini Time Evolution of Floquet States in Graphene Advances in Condensed Matter Physics |
| title | Time Evolution of Floquet States in Graphene |
| title_full | Time Evolution of Floquet States in Graphene |
| title_fullStr | Time Evolution of Floquet States in Graphene |
| title_full_unstemmed | Time Evolution of Floquet States in Graphene |
| title_short | Time Evolution of Floquet States in Graphene |
| title_sort | time evolution of floquet states in graphene |
| url | http://dx.doi.org/10.1155/2018/5703197 |
| work_keys_str_mv | AT fmanghi timeevolutionoffloquetstatesingraphene AT mpuviani timeevolutionoffloquetstatesingraphene AT flenzini timeevolutionoffloquetstatesingraphene |