https://doi.org/10.1140/epjp/s13360-022-03470-4
Regular Article
Beta-borophene under the circularly polarized radiation: polaritonic and polaronic dynamic band structure
1
Department of Physics, Faculty of Science, Ankara University, 06100, Tandogan, Ankara, Turkey
2
Institute for Theoretical Physics, University of Regensburg, Regensburg, Germany
Received:
2
August
2022
Accepted:
3
November
2022
Published online:
22
November
2022
We study the effect of circularly polarized electromagnetic radiation on the optical polarons in a monolayer 
-borophene. We focus our attention on the off-resonant regime of large driving frequencies, which allows us to set up an effectively time-independent Hamiltonian describing the radiation field up to the second perturbational order. The contributions of optical surface phonons are incorporated according to the Lee–Low–Pines theory, via a sequence of appropriate unitary transformations. A central object in our investigation is the electronic band gap, which is shown to be widely controllable via the variation of light irradiation and substrate properties. We also show that the polaron self-energy contribution gives more contribution than the combination of the polaronic and polaritonic effects.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2022. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
