Inelastic x-ray scattering in heterostructures: electronic excitations in LaAlO3/SrTiO3
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
We present an investigation of the valence-electron excitation spectra including the collective plasmon modes of SrTiO3, LaAlO3 and their heterostructures with non-resonant inelastic x-ray scattering. We analyse the spectra using calculations based on first principles and atomic multiplet models. We demonstrate the feasibility of performing valence IXS experiments in a total reflection geometry. Surprisingly, we find that the plasmon, interband and semicore excitations in multilayers are well described as a superposition of bulk-compound spectra even in a superstructure composing of layers of only one atomic layer thickness.
Details
Original language | English |
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Article number | 335501 |
Journal | Journal of Physics Condensed Matter |
Volume | 27 |
Issue number | 33 |
Publication status | Published - 26 Aug 2015 |
Peer-reviewed | Yes |
Externally published | Yes |
External IDs
ORCID | /0000-0002-2438-0672/work/158767769 |
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Keywords
ASJC Scopus subject areas
Keywords
- Electronic structure, Heterostructures, Inelastic x-ray scattering