Jaiswal, R and Narayan, A (2020) Floquet engineering of multifold fermions. In: Physical Review B, 102 (24).
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Abstract
Using Floquet theory, we investigate the effect of light on triplefold fermions. We study a low-energy model as well as a simplified tight-binding model under illumination. We find that the threefold degeneracy remains symmetry protected even after applying light if the original band structure is rotationally symmetric around the degeneracy. Otherwise, light can lift the degeneracy and open up a gap. We further investigate the effect of light on the topological Fermi arcs by means of numerical computations. The changes caused by illumination are reflected in experimentally detectable signatures, such as the anomalous Hall conductivity, which we calculate. © 2020 American Physical Society.
| Item Type: | Journal Article |
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| Publication: | Physical Review B |
| Publisher: | American Physical Society |
| Additional Information: | Copyright of this article belongs to American Physical Society |
| Keywords: | Energy model; Fermi arcs; Floquet; Floquet theory; Hall conductivity; Numerical computations; Tight binding model |
| Department/Centre: | Division of Chemical Sciences > Solid State & Structural Chemistry Unit UG Programme |
| Date Deposited: | 15 Jan 2021 10:24 |
| Last Modified: | 15 Jan 2021 10:24 |
| URI: | http://eprints.iisc.ac.in/id/eprint/67606 |
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