Interplay of Kekulé distortions and laser fields in graphene
We study the interplay between a Kekulé patterned distortion in monolayer graphene and a monochromatic laser irradiation, focusing in the long wavelength approximation of its Landau level structure. Exploiting the symmetries of the system, we calculate in the static regime an exact analytical soluti...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Institute for Condensed Matter Physics
2023-03-01
|
| Series: | Condensed Matter Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.5488/CMP.26.13505 |
| _version_ | 1811158879017369600 |
|---|---|
| author | A. Lopez F. Mireles |
| author_facet | A. Lopez F. Mireles |
| author_sort | A. Lopez |
| collection | DOAJ |
| description | We study the interplay between a Kekulé patterned distortion in monolayer graphene and a monochromatic laser irradiation, focusing in the long wavelength approximation of its Landau level structure. Exploiting the symmetries of the system, we calculate in the static regime an exact analytical solution for the energy spectrum and its eigenstates, which in turn allows us to find close expressions for the polarizations in the valley and pseudospin degrees of freedom. We find that due to the valley-momentum coupling, the valley polarization exhibits a distinct magnetic response for the two K-valley components. Owing to that, the introduction of the radiation field mixes the Landau levels, and it is shown that by tuning the system to resonance leads to a larger valley-polarization response as compared to the non-resonant scenario. |
| first_indexed | 2024-04-10T05:31:49Z |
| format | Article |
| id | doaj.art-e6abaaae15c643df8b26483ca396753b |
| institution | Directory Open Access Journal |
| issn | 1607-324X 2224-9079 |
| language | English |
| last_indexed | 2024-04-10T05:31:49Z |
| publishDate | 2023-03-01 |
| publisher | Institute for Condensed Matter Physics |
| record_format | Article |
| series | Condensed Matter Physics |
| spelling | doaj.art-e6abaaae15c643df8b26483ca396753b2023-03-07T08:29:46ZengInstitute for Condensed Matter PhysicsCondensed Matter Physics1607-324X2224-90792023-03-012611350510.5488/CMP.26.13505Interplay of Kekulé distortions and laser fields in grapheneA. LopezF. MirelesWe study the interplay between a Kekulé patterned distortion in monolayer graphene and a monochromatic laser irradiation, focusing in the long wavelength approximation of its Landau level structure. Exploiting the symmetries of the system, we calculate in the static regime an exact analytical solution for the energy spectrum and its eigenstates, which in turn allows us to find close expressions for the polarizations in the valley and pseudospin degrees of freedom. We find that due to the valley-momentum coupling, the valley polarization exhibits a distinct magnetic response for the two K-valley components. Owing to that, the introduction of the radiation field mixes the Landau levels, and it is shown that by tuning the system to resonance leads to a larger valley-polarization response as compared to the non-resonant scenario.https://doi.org/10.5488/CMP.26.13505graphenelandau levelskekule distortionfloquet theorypolarization |
| spellingShingle | A. Lopez F. Mireles Interplay of Kekulé distortions and laser fields in graphene Condensed Matter Physics graphene landau levels kekule distortion floquet theory polarization |
| title | Interplay of Kekulé distortions and laser fields in graphene |
| title_full | Interplay of Kekulé distortions and laser fields in graphene |
| title_fullStr | Interplay of Kekulé distortions and laser fields in graphene |
| title_full_unstemmed | Interplay of Kekulé distortions and laser fields in graphene |
| title_short | Interplay of Kekulé distortions and laser fields in graphene |
| title_sort | interplay of kekule distortions and laser fields in graphene |
| topic | graphene landau levels kekule distortion floquet theory polarization |
| url | https://doi.org/10.5488/CMP.26.13505 |
| work_keys_str_mv | AT alopez interplayofkekuledistortionsandlaserfieldsingraphene AT fmireles interplayofkekuledistortionsandlaserfieldsingraphene |