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- Title
Electronic superlattice revealed by resonant scattering from random impurities in Sr3Ru<sub>2</sub>O<sub>7</sub>.
- Authors
Hossain, M. A.; Zegkinoglou, I.; Y.-D. Chuang; Geck, J.; Bohnenbuck, B.; Gonzalez, A. G. Cruz; H.-H.Wu; Schüßler-Langeheine, C.; Hawthorn, D.G.; Denlinger, J. D.; R. Mathieu; Y. Tokura; S. Satow; H. Takagi; Y. Yoshida; Hussain, Z.; Keimer, B.; Sawatzky, G. A.; Damascelli, A.
- Abstract
Resonant elastic x-ray scattering (REXS) is an exquisite element-sensitive tool for the study of subtle charge, orbital, and spin superlattice orders driven by the valence electrons, which therefore escape detection in conventional x-ray diffraction (XRD). Although the power of REXS has been demonstrated by numerous studies of complex oxides performed in the soft x-ray regime, the cross section and photon wavelength of the material-specific elemental absorption edges ultimately set the limit to the smallest superlattice amplitude and periodicity one can probe. Here we show - with simulations and REXS on Mn-substituted Sr3Ru2O7 - that these limitations can be overcome by performing resonant scattering experiments at the absorption edge of a suitably-chosen, dilute impurity. This establishes that - in analogy with impurity-based methods used in electron-spin-resonance, nuclear-magnetic resonance, and Mössbauer spectroscopy - randomly distributed impurities can serve as a non-invasive, but now momentum-dependent probe, greatly extending the applicability of resonant x-ray scattering techniques.
- Subjects
X-ray scattering; CONSTITUTION of matter; CONDUCTION electrons; MAGNETIC resonance; CATHODE rays
- Publication
Scientific Reports, 2013, p1
- ISSN
2045-2322
- Publication type
Article
- DOI
10.1038/srep02299