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The interactions between delocalized and localized charges play important roles in correlated electron systems. Here, using a combination of transport measurements, spectroscopic ellipsometry (SE), and X‐ray absorption spectroscopy (XAS) supported by theoretical calculations, we reveal the important role of interfacial localized charges and their screening effects in determining the mobility of (La...
We excite low-coordinated surface sites of nanostructured MgO samples using 4.7eV UV laser pulses and observe dominant hyperthermal O-atom emission. Excitation of the same samples with 7.9eV photons results in thermal O-atom desorption. These results are analyzed in the context of laser desorption models developed previously for alkali halide crystals and MgO. We detail two multi-step mechanisms for...
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