| Autor: |
Hossain, M. A., Zegkinoglou, I., Chuang, Y. -D., Geck, J., Bohnenbuck, B., Gonzalez, A. G. Cruz, Wu, H. -H., Schussler-Langeheine, C., Hawthorn, D. G., Denlinger, J. D., Mathieu, R., Tokura, Y., Satow, S., Takagi, H., Yoshida, Y., Hussain, Z., Keimer, B., Sawatzky, G. A., Damascelli, A. |
| Rok vydání: |
2013 |
| Předmět: |
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| Zdroj: |
Scientific Reports 3, 2299 (2013) |
| Druh dokumentu: |
Working Paper |
| 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: |
arXiv |
| Externí odkaz: |
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