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Quenched Magnon excitations by oxygen sublattice reconstruction in (SrCuO2)n/(SrTiO3)2 superlattices.

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Author Dantz M, Pelliciari J, Samal D, Bisogni V, Huang Y, Olalde-Velasco P, Strocov V N, Koster G, Schmitt T,
Project Mott Physics Beyond the Heisenberg Model in Iridates and Related Materials
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Original article (peer-reviewed)

Journal Scientific reports
Volume (Issue) 6
Page(s) 32896 - 32896
Title of proceedings Scientific reports
DOI 10.1038/srep32896

Open Access

URL http://www.nature.com/articles/srep32896
Type of Open Access Publisher (Gold Open Access)

Abstract

The recently discovered structural reconstruction in the cuprate superlattice (SrCuO2)n/(SrTiO3)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 Γ-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.
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