Tunable interface states between Floquet-Weyl semimetals
- URL: http://arxiv.org/abs/2205.05388v2
- Date: Thu, 10 Nov 2022 09:09:27 GMT
- Title: Tunable interface states between Floquet-Weyl semimetals
- Authors: F. Bonasera, S.-B. Zhang, L. Privitera, F.M.D. Pellegrino
- Abstract summary: We study the occurrence of interface states between two regions of a nodal line semimetal shined by two beams of light with opposite circular polarizations.
We find remarkable modifications of the energy structure by tuning the polarized light.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Weyl semimetals and nodal line semimetals are characterized by linear
electronic bands touching at zero-dimensional points and one-dimensional lines,
respectively. Recently, it has been predicted that nodal line semimetals can be
driven into tunable Floquet-Weyl semimetals by circularly polarized light.
Here, we study the occurrence of interface states between two regions of a
nodal line semimetal shined by two beams of light with opposite circular
polarizations. Within a minimal model, we find remarkable modifications of the
energy structure by tuning the polarized light, such as the possible generation
of van Hove singularities. Moreover, by adding a $\delta$-doping of magnetic
impurities along the interfacial plane, we show the occurrence of a switchable
and topologically non-trivial, vortex-like pseudo-spin pattern of the interface
states.
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