Circular dichroism in Floquet Chern insulator via high-order harmonics spectroscopy

High-order harmonics (HOHs) spectroscopy is attracting the attention of the condensed matter community, mostly because the HOHs spectrum encode the material property. Topological materials are of interest for both basic research and advanced technologies because of their robust properties against di...

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Bibliographic Details
Published in:Journal of physics. Condensed matter 2024-01, Vol.36 (3), p.35701
Main Authors: Kim, Jeail, Kim, Dasol, Kim, Dong Eon, Chacón, Alexis
Format: Article
Language:English
Subjects:
Floquet
high order harmonics
topological insulator
ultrafast dynamics
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Summary:High-order harmonics (HOHs) spectroscopy is attracting the attention of the condensed matter community, mostly because the HOHs spectrum encode the material property. Topological materials are of interest for both basic research and advanced technologies because of their robust properties against dissipation and perturbations. Floquet engineering technique have been demonstrated to be a unique tool to manipulate topological phase. In this paper, we apply HOH spectroscopy to characterize the Floquet state via the circular dichroism (CD). We find that the CD of the co-rotating harmonics is sensitive to Floquet topological states
ISSN:0953-8984
1361-648X
DOI:10.1088/1361-648X/ad0015