Nonlocal phonon response, modeled by dispersive longitudinal optical phonons, qualitatively changes the optical spectra of nanoscale polar dielectrics and explains measured superlattice reflectance where local theory fails.
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Theory of Optical Nonlocality in Polar Dielectrics
Nonlocal phonon response, modeled by dispersive longitudinal optical phonons, qualitatively changes the optical spectra of nanoscale polar dielectrics and explains measured superlattice reflectance where local theory fails.