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Optical properties, plasmons, and orbital Skyrme textures in twisted TMDs

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arxiv 2410.18025 v1 pith:XJXIEJZL submitted 2024-10-23 cond-mat.mes-hall

Lorenzo Cavicchi , Koen J. A. Reijnders , Mikhail I. Katsnelson , Marco Polini This is my paper · ORCID
classification cond-mat.mes-hall
keywords plasmonstwistedbulkopticalorbitalskyrmetexturesberry
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abstract

In the long-wavelength limit, Bloch-band Berry curvature has no effect on the bulk plasmons of a two-dimensional electron system. In this Letter we show instead that bulk plasmons are a probe of real-space topology. In particular, we focus on orbital Skyrme textures in twisted transition metal dichalcogenides, presenting detailed semiclassical and quantum mechanical calculations of the optical conductivity and plasmon spectrum of twisted ${\rm MoTe}_2$.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Anomalous skew scattering of plasmons in a Dirac electron fluid

    cond-mat.mes-hall 2025-01 conditional novelty 6.0 of 10

    A circular Berry-flux target makes plasmon scattering strongly skewed and resonant because a chiral trapped mode circulates the patch.

  2. Magnetorotons in Moir\'e Fractional Chern Insulators

    cond-mat.str-el 2024-12 conditional novelty 6.0 of 10

    Moiré fractional Chern insulators in twisted MoTe2 are predicted to host universal finite-momentum magnetorotons, whose long-wavelength limit is a gapped chiral angular-momentum-2 geometric excitation.

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