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Chiral structures of electric polarization vectors quantified by X-ray resonant scattering

Kim, KT and McCarter, MR and Stoica, VA and Das, S and Klewe, C and Donoway, EP and Burn, DM and Shafer, P and Rodolakis, F and Gonçalves, MAP and Gómez-Ortiz, F and �ñiguez, J and García-Fernández, P and Junquera, J and Susarla, S and Lovesey, SW and van der Laan, G and Park, SY and Martin, LW and Freeland, JW and Ramesh, R and Lee, DR (2022) Chiral structures of electric polarization vectors quantified by X-ray resonant scattering. In: Nature Communications, 13 (1).

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Official URL: https://doi.org/10.1038/s41467-022-29359-5


Resonant elastic X-ray scattering (REXS) offers a unique tool to investigate solid-state systems providing spatial knowledge from diffraction combined with electronic information through the enhanced absorption process, allowing the probing of magnetic, charge, spin, and orbital degrees of spatial order together with electronic structure. A new promising application of REXS is to elucidate the chiral structure of electrical polarization emergent in a ferroelectric oxide superlattice in which the polarization vectors in the REXS amplitude are implicitly described through an anisotropic tensor corresponding to the quadrupole moment. Here, we present a detailed theoretical framework and analysis to quantitatively analyze the experimental results of Ti L-edge REXS of a polar vortex array formed in a PbTiO3/SrTiO3 superlattice. Based on this theoretical framework, REXS for polar chiral structures can become a useful tool similar to x-ray resonant magnetic scattering (XRMS), enabling a comprehensive study of both electric and magnetic REXS on the chiral structures. © 2022, The Author(s).

Item Type: Journal Article
Publication: Nature Communications
Publisher: Nature Research
Additional Information: The copyright for this article belongs to the authors.
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Date Deposited: 10 May 2022 15:52
Last Modified: 10 May 2022 15:52
URI: https://eprints.iisc.ac.in/id/eprint/71730

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