Probing energy landscapes in multilayer heterostructures: Challenges and opportunities

Chambers, Scott A.; Sushko, Peter V.

doi:10.1063/1.5129155

Title: Probing energy landscapes in multilayer heterostructures: Challenges and opportunities

Journal Article · 25 November 2019 · APL Materials

DOI: https://doi.org/10.1063/1.5129155 · OSTI ID:1615332

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Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

Quantitative characterization of energy landscapes at buried interfaces is essential for assessing their functionality. This perspective highlights recent developments in reconstructing internal potential profiles based on hard x-ray photoemission experiments that have proved to be a rich source of information. We show that band-edge profiles can be reconstructed from core-level photoelectron spectra by performing a comprehensive search for the best-fit set of associated layer-resolved spectra. The use of hard x-rays allows heterostructures to be probed over length scales comparable to relevant electronic screening lengths.Significantly,this information takes our understanding of such systems to a new level that is not currently achievable using any other experimental technique.

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Research Organization:: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)

Sponsoring Organization:: USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division

Grant/Contract Number:: AC05-76RL01830

OSTI ID:: 1615332

Report Number(s):: PNNL-SA--149827

Journal Information:: APL Materials, Journal Name: APL Materials Journal Issue: 11 Vol. 7; ISSN 2166-532X

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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36 MATERIALS SCIENCE
Hard X-rays
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Photoelectric effect
Photoelectron spectroscopy

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References (28)

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