Journal
PHYSICAL REVIEW B
Volume 88, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.88.020101
Keywords
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Funding
- Department of Energy, Office of Basic Energy Sciences, Division of Material Sciences and Engineering
- Los Alamos National Laboratory's Directed Research and Development Program
- Los Alamos National Security, LLC, for the National Nuclear Security Administration of the US Department of Energy [DE-AC52-06NA25396]
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An emerging area in condensed matter physics is the use of multilayered heterostructures to enhance ferroelectricity in complex oxides. Here we demonstrate that optically pumping carriers across the interface between thin films of a ferroelectric (FE) insulator and a ferromagnetic metal can significantly enhance the FE polarization. The photoinduced FE state remains stable at low temperatures for over one day. This occurs through screening of the internal electric field by the photoexcited carriers, leading to a larger, more stable polarization state that may be suitable for applications in areas such as data and energy storage.
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