Journal article
Polarization screening-induced magnetic phase gradients at complex oxide interfaces
Nature communications, v 6(1), pp 6735-6735
16 Apr 2015
PMID: 25879160
Abstract
Thin-film oxide heterostructures show great potential for use in spintronic memories, where electronic charge and spin are coupled to transport information. Here we use a La0.7Sr0.3MnO3 (LSMO)/PbZr0.2Ti0.8O3 (PZT) model system to explore how local variations in electronic and magnetic phases mediate this coupling. We present direct, local measurements of valence, ferroelectric polarization and magnetization, from which we map the phases at the LSMO/PZT interface. We combine these experimental results with electronic structure calculations to elucidate the microscopic interactions governing the interfacial response of this system. We observe a magnetic asymmetry at the LSMO/PZT interface that depends on the local PZT polarization and gives rise to gradients in local magnetic moments; this is associated with a metal-insulator transition at the interface, which results in significantly different charge-transfer screening lengths. This study establishes a framework to understand the fundamental asymmetries of magnetoelectric coupling in oxide heterostructures.
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Details
- Title
- Polarization screening-induced magnetic phase gradients at complex oxide interfaces
- Creators
- Steven R Spurgeon - Department of Materials Science and Engineering, Drexel University, Philadelphia, Pennsylvania 19104, USAPrasanna V Balachandran - Department of Materials Science and Engineering, Drexel University, Philadelphia, Pennsylvania 19104, USADespoina M Kepaptsoglou - SuperSTEM, SciTech Daresbury Campus, Daresbury, WA44AD, UKAnoop R Damodaran - Department of Materials Science and Engineering, University of California, Berkeley, Berkeley, California 94720, USAJ Karthik - Department of Materials Science and Engineering and Materials Research Laboratory, University of Illinois, Urbana-Champaign, Urbana, Illinois 61801, USASiamak Nejati - Department of Chemical and Biological Engineering, Drexel University, Philadelphia, Pennsylvania 19104, USALewys Jones - Department of Materials, University of Oxford, Oxford OX13PH, UKHaile Ambaye - Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USAValeria Lauter - Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USAQuentin M Ramasse - SuperSTEM, SciTech Daresbury Campus, Daresbury, WA44AD, UKKenneth K S Lau - Department of Chemical and Biological Engineering, Drexel University, Philadelphia, Pennsylvania 19104, USALane W Martin - Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USAJames M Rondinelli - Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208-3108, USAMitra L Taheri - Department of Materials Science and Engineering, Drexel University, Philadelphia, Pennsylvania 19104, USA
- Publication Details
- Nature communications, v 6(1), pp 6735-6735
- Publisher
- Springer Nature; England
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemical and Biological Engineering
- Web of Science ID
- WOS:000353701900004
- Scopus ID
- 2-s2.0-84928041751
- Other Identifier
- 991014878445204721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Multidisciplinary Sciences