Direct Observation of Site-specific Valence Electronic Structure at Interface: SiO2/Si Interface

Details Direct Observation of Site-specific Valence Electronic Structure at Interface: SiO2/Si Interface Direct Observation of Site-specific Valence Electronic Structure at Interface: SiO2/Si Interface

2005-06-06

arxiv.org/abs/cond-mat/0506128v1

Physics

Condensed Matter

Materials Science

4 pages, 3 figures

Scientific paper

10.1103/PhysRevB.73.045336

Atom specific valence electronic structures at interface are elucidated successfully using soft x-ray absorption and emission spectroscopy. In order to demonstrate the versatility of this method, we investigated SiO2/Si interface as a prototype and directly observed valence electronic states projected at the particular atoms of the SiO2/Si interface; local electronic structure strongly depends on the chemical states of each atom. In addition we compared the experimental results with first-principle calculations, which quantitatively revealed the interfacial properties in atomic-scale.

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