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Title

Control of up-to-down/down-to-up light-induced ferroelectric polarization reversal

AuthorsTan, Huan; Castro, Gustavo; Lyu, Jike; Loza Alvarez, Pablo; Sánchez Barrera, Florencio CSIC ORCID; Fontcuberta, Josep CSIC ORCID; Fina, Ignasi CSIC ORCID CVN
KeywordsThin-films
Self-polarization
Issue Date30-Aug-2022
PublisherRoyal Society of Chemistry (UK)
CitationMaterials Horizons 9(9): 2345-2352 (2022)
AbstractLight control of ferroelectric polarization is of interest for the exploitation of ferroelectric thin films in ultrafast data storage and logic functionalities. The rapidly oscillating electric field of light absorbed in a ferroelectric layer can suppress its polarization but cannot selectively reverse its direction. Here we take advantage of the built-in asymmetry at ferroelectric/electrode interfaces to break the up/down symmetry in uniaxial ferroelectrics to promote polarization reversal under illumination. It is shown that appropriate ferroelectric/metal structures allow the direction of the imprint electric field to be selected, which is instrumental for polarization reversal. This ability is further exploited by demonstrating the optical control of the resistance states in a ferroelectric capacitor.
Publisher version (URL)http://dx.doi.org/10.1039/d2mh00644h
URIhttp://hdl.handle.net/10261/283293
DOI10.1039/d2mh00644h
ISSN2051-6347
Appears in Collections:(ICMAB) Artículos




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