Optical response of alternating twisted trilayer graphene
Fuente:
arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866909448360951808 |
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| author | Margetis, Dionisios Gómez-Santos, Guillermo Stauber, Tobias |
| author_facet | Margetis, Dionisios Gómez-Santos, Guillermo Stauber, Tobias |
| contents | We study the optical response of the alternating twisted trilayer graphene by making use of a unitary transformation for the trilayer Hamiltonian and the Kubo formulation of linear response theory. The layer-resolved optical conductivities are expressed in terms of contributions from effective twisted bilayer and single-layer systems along with their coupling. We show that the in-plane magnetic response is proportional to this coupling between the twisted bilayer and single-layer systems; and, due to the different energy scales, the in-plane magnetic response is negligibly small. We also formulate a local electro-magnetic response that involves the vertical gradients of the magnetic field and moment. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_04437 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Optical response of alternating twisted trilayer graphene Margetis, Dionisios Gómez-Santos, Guillermo Stauber, Tobias Mesoscale and Nanoscale Physics Mathematical Physics We study the optical response of the alternating twisted trilayer graphene by making use of a unitary transformation for the trilayer Hamiltonian and the Kubo formulation of linear response theory. The layer-resolved optical conductivities are expressed in terms of contributions from effective twisted bilayer and single-layer systems along with their coupling. We show that the in-plane magnetic response is proportional to this coupling between the twisted bilayer and single-layer systems; and, due to the different energy scales, the in-plane magnetic response is negligibly small. We also formulate a local electro-magnetic response that involves the vertical gradients of the magnetic field and moment. |
| title | Optical response of alternating twisted trilayer graphene |
| topic | Mesoscale and Nanoscale Physics Mathematical Physics |
| url | https://arxiv.org/abs/2409.04437 |