Abstract
We report angle resolved photoemission studies of La0.66Ca0.33MnO3 and La1.2Sr1.8Mn2O7 using single crystal samples. The Mn 3p–3d resonance photoemission data of La0.66Ca0.33MnO3 show that the states at 2.5 eV binding energy have predominantly Mn 3d character, qualitatively consistent with the predictions of local spin density approximation calculations except for a 1 eV shift toward higher binding energy. Band dispersions are observed in the normal emission data. The spectra of La1.2Sr1.8Mn2O7 show well defined features and strong matrix element effects, indicating excellent surface quality.
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