Journal article
Structural "delta Doping" to Control Local Magnetization in Isovalent Oxide Heterostructures
Physical review letters, Vol.119(19), pp.197204-197204
08 Nov 2017
PMID: 29219521
Abstract
Modulation and delta-doping strategies, in which atomically thin layers of charged dopants are precisely deposited within a heterostructure, have played enabling roles in the discovery of new physical behavior in electronic materials. Here, we demonstrate a purely structural "delta-doping" strategy in complex oxide heterostructures, in which atomically thin manganite layers are inserted into an isovalent manganite host, thereby modifying the local rotations of corner-connected MnO6 octahedra. Combining scanning transmission electron microscopy, polarized neutron reflectometry, and density functional theory, we reveal how local magnetic exchange interactions are enhanced within the spatially confined regions of suppressed octahedral rotations. The combined experimental and theoretical results illustrate the potential to utilize noncharge-based approaches to "doping" in order to enhance or suppress functional properties within spatially confined regions of oxide heterostructures.
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Details
- Title
- Structural "delta Doping" to Control Local Magnetization in Isovalent Oxide Heterostructures
- Creators
- E. J. Moon - Drexel UniversityQ. He - Oak Ridge National LaboratoryS. Ghosh - Vanderbilt UniversityB. J. Kirby - NIST Center for Neutron ResearchS. T. Pantelides - Vanderbilt UniversityA. Y. Borisevich - Oak Ridge National LaboratoryS. J. May - Drexel UniversityVanderbilt Univ., Nashville, TN (United States)
- Publication Details
- Physical review letters, Vol.119(19), pp.197204-197204
- Publisher
- Amer Physical Soc
- Number of pages
- 6
- Grant note
- W911NF-15-1-0133 / Army Research Office U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division; United States Department of Energy (DOE) DE-FG02-09ER46554 / U.S. Department of Energy; United States Department of Energy (DOE) Mat136 / Oak Ridge Leadership Computing Facility DE-AC02-05CH11231 / Office of Science of the U.S. DOE; United States Department of Energy (DOE) Vanderbilt University
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Identifiers
- 991019167536404721
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- Web of Science research areas
- Physics, Multidisciplinary