Band alignment between (100) Si and amorphous LaAlO3, LaScO3, and Sc2O3: Atomically abrupt versus interlayer-containing interfaces

作者: V. V. Afanas’ev , A. Stesmans , L. F. Edge , D. G. Schlom , T. Heeg

DOI: 10.1063/1.2164432

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摘要: Incorporation of a ∼1-nm-thick SiOx interlayer is found to have little effect on the band alignment between (100) Si substrate and amorphous LaAlO3, LaScO2, Sc2O3 insulators. All these materials are give same offsets irrespective differences in their composition, even when contacting directly. This suggests that bulk electron states properties semiconductor insulator layer play much more important role determining lineup at interface than any dipoles related particular bonding configurations encountered transition region oxides.

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