Floquet boundary states in AB-stacked graphite
- Calvo, Hernan Laureano
- Barrios Vargas, José E.
- Foa Torres, Luis Eduardo Francisco
DOIAbstract
We report on the effect of laser illumination with circularly polarized light on the electronic structure of ABstacked graphite samples. By using Floquet theory in combination with Green’s function techniques, we find that the polarized light induces band-gap openings at the Floquet zone edge ℏΩ/2, bridged by chiral boundary states. These states propagate mainly along the borders of the constituting layers as evidenced by the time-averaged local density of states and the probability current density in several geometries. Semianalytic calculations of the Chern number suggest that these states are of topological nature, similar to those found in illuminated 2D samples like monolayer and bilayer graphene. These states are promising candidates ...
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