Journal article
Probing single-unit-cell resolved electronic structure modulations in oxide superlattices with standing-wave photoemission
Physical review. B, v 100(12)
09 Sep 2019
Abstract
Control of structural coupling at complex-oxide interfaces is a powerful platform for creating ultrathin layers with electronic and magnetic properties unattainable in the bulk. However, with the capability to design and control the electronic structure of such buried layers and interfaces at a unit-cell level, a new challenge emerges to be able to probe these engineered emergent phenomena with depth-dependent atomic resolution as well as element- and orbital selectivity. Here, we utilize a combination of core-level and valence-band soft x-ray standing-wave photoemission spectroscopy, in conjunction with scanning transmission electron microscopy, to probe the depth-dependent and single-unit-cell resolved electronic structure of an isovalent manganite superlattice [Eu0.7Sr0.3MnO3/La0.7Sr0.3MnO3] x 15 wherein the electronic-structural properties are intentionally modulated with depth via engineered oxygen octahedra rotations/tilts and A-site displacements. Our unit-cell resolved measurements reveal significant transformations in the local chemical and electronic valence-band states, which are consistent with the layer-resolved first-principles theoretical calculations, thus opening the door for future depth-resolved studies of a wide variety of heteroengineered material systems.
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Details
- Title
- Probing single-unit-cell resolved electronic structure modulations in oxide superlattices with standing-wave photoemission
- Creators
- W. Yang - Temple UniversityR. U. Chandrasena - Temple UniversityM. Gu - Northwestern UniversityR. M. S. dos Reis - Lawrence Berkeley Natl Lab, Natl Ctr Electron Microscopy, Mol Foundry, Berkeley, CA 94720 USAE. J. Moon - Drexel UniversityArian Arab - Temple UniversityM-A Husanu - Paul Scherrer InstituteS. Nemsak - Lawrence Berkeley National LaboratoryE. M. Gullikson - Lawrence Berkeley National LaboratoryJ. Ciston - National Center for Electron MicroscopyV. N. Strocov - Paul Scherrer InstituteJ. M. Rondinelli - Northwestern UniversityS. J. May - Drexel UniversityA. X. Gray - Temple University
- Publication Details
- Physical review. B, v 100(12)
- Publisher
- Amer Physical Soc
- Number of pages
- 9
- Grant note
- Presidential Early Career Award for Scientists and Engineers (PECASE) through the U.S. Department of Energy DE-SC0012375 / U.S. DOE; United States Department of Energy (DOE) DE-SC0019297 / U.S. Department of Energy (DOE), Office of Science, Office of Basic Energy Sciences, Materials Sciences and Engineering Division; United States Department of Energy (DOE) 2015.0257 / Swiss Excellence Scholarship grant ESKAS DE-AC02-05CH11231 / Office of Science, Office of Basic Energy Sciences, of the U.S. DOE; United States Department of Energy (DOE) DE-AC02-06CH11357 / U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences; United States Department of Energy (DOE) W911NF-15-1-0133; W911NF-15-1-0181 / U.S. Army Research Office
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000485193300005
- Scopus ID
- 2-s2.0-85072615434
- Other Identifier
- 991019167615404721
InCites Highlights
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Materials Science, Multidisciplinary
- Physics, Applied
- Physics, Condensed Matter