Electronic superlattice revealed by resonant scattering from random impurities in Sr3Ru2O7
| Autor: | Zahid Hussain, S. Satow, Bernhard Keimer, Yi-De Chuang, J. D. Denlinger, J. Geck, Roland Mathieu, Huiyun Wu, I. Zegkinoglou, C. Schussler-Langeheine, M. A. Hossain, Andrea Damascelli, David Hawthorn, Hidenori Takagi, Y. Tokura, A. G. Cruz Gonzalez, George A. Sawatzky, Yoshiyuki Yoshida, B. Bohnenbuck |
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| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
Diffraction
Multidisciplinary Photon Materials science Strongly Correlated Electrons (cond-mat.str-el) Condensed matter physics Scattering Superlattice FOS: Physical sciences Electrons 01 natural sciences Resonance (particle physics) Article 010305 fluids & plasmas Condensed Matter - Strongly Correlated Electrons Models Chemical X-Ray Diffraction Absorption edge Metals 0103 physical sciences Scattering Radiation Computer Simulation 010306 general physics Valence electron Absorption (electromagnetic radiation) |
| Zdroj: | Scientific Reports |
| ISSN: | 2045-2322 |
| DOI: | 10.1038/srep02299 |
| Popis: | 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 Sr$_3$Ru$_2$O$_7$ -- 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 M\"ossbauer 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. |
| Databáze: | OpenAIRE |
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