Quenched Magnon excitations by oxygen sublattice reconstruction in (SrCuO 2) n /(SrTiO 3) 2 superlattices

M. Dantz*, J. Pelliciari, D. Samal, V. Bisogni, Y. Huang, P. Olalde-Velasco, V. N. Strocov, G. Koster, T. Schmitt

*Corresponding author for this work

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Abstract

The recently discovered structural reconstruction in the cuprate superlattice (SrCuO 2) n /(SrTiO 3) 2 has been investigated across the critical value of n = 5 using resonant inelastic x-ray scattering (RIXS). We find that at the critical value of n, the cuprate layer remains largely in the bulk-like two-dimensional structure with a minority of Cu plaquettes being reconstructed. The partial reconstruction leads to quenching of the magnons starting at the Î "-point due to the minority plaquettes acting as scattering points. Although comparable in relative abundance, the doped charge impurities in electron-doped cuprate superconductors do not show this quenching of magnetic excitations.

Original languageEnglish
Article number32896
JournalScientific reports
Volume6
DOIs
Publication statusPublished - 12 Sep 2016

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    Dantz, M., Pelliciari, J., Samal, D., Bisogni, V., Huang, Y., Olalde-Velasco, P., ... Schmitt, T. (2016). Quenched Magnon excitations by oxygen sublattice reconstruction in (SrCuO 2) n /(SrTiO 3) 2 superlattices. Scientific reports, 6, [32896]. https://doi.org/10.1038/srep32896