Work

Optical response of alternating twisted trilayer graphene

Year: 2024

Type: article

Abstract: 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 electromagnetic response that involves the vertical gradients of the magnetic field and moment.

Source: Physical review. B./Physical review. B

DOI: 10.1103/physrevb.110.205144

Authors: Dionisios Margetis, Guillermo Gómez-Santos, Tobias Stauber

Institutions: University of Maryland, College Park, Universidad Autónoma de Madrid, Instituto de Ciencia de Materiales de Madrid

Language: English

Topic: Graphene research and applications

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funders: Ministerio de Ciencia, Innovación y Universidades, Agencia Estatal de Investigación