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Unified description of exciton, phonon and plasmon dispersions in 2D materials from an optical conductivity approximation

Guandalini, Alberto et al.
arXiv (All) · Papers
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materials-science
The modified Coulomb interaction in two-dimensional (2D) materials gives rise to unique, non-analytic low-momentum dispersions of excitons, phonons, and plasmons. Here, we describe the 2D dispersion of longitudinal excitations by introducing the optical conductivity approximation (OCA), a unified fr
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