Abstract
The large zero-point oscillation of energy ~0.1–1 eV of strong coupling hole carriers in layered perovskite (LP) conductor is shown to provide effective field B* ~ 103–4 T causing fractional quantum Hall effect (FQHE) when space charge and moderate localization are present. The quasiparticle excitation spectrum of the FQHE system is calculated. The FQHE state is a macroscopic quantum state where macroscopic interference effect is expected. Using (001) La 2-x Sr x CuO 4-y (LSCO) film, we observed "dc dielectric interference" and the interference effect at 28 THz, which are explicable by the FQHE in the layered perovskite film.
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