Browsing by Author "Mazzoli, C"

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    Direct observation of charge order and an orbital glass state in multiferroic LuFe2O4
    (American Physical Society, 2009-08-14) Mulders, AM; Lawrence, SM; Staub, U; García-Fernández, M; Scagnoli, V; Mazzoli, C; Pomjakushina, E; Conder, K; Wang, YD
    Geometrical frustration of the Fe ions in LuFe2O4 leads to intricate charge and magnetic order and a strong magnetoelectric coupling. Using resonant x-ray diffraction at the Fe K edge, the anomalous scattering factors of both Fe sites are deduced from the (h/3 k/3 l/2) reflections. The chemical shift between the two types of Fe ions equals 4.0(1) eV corresponding to full charge separation into Fe2+ and Fe3+. The polarization and azimuthal angle dependence of the superlattice reflections demonstrate the absence of differences in anisotropic scattering revealing random orientations of the Fe2+ orbitals characteristic of an orbital glass state. © 2009, American Physical Society
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    REXS contribution to electronic ordering investigation in solids
    (Springer Heidelberg, 2012-06-01) Beale, TAW; Beutier, G; Bland, SR; Bombardi, A; Bouchenoire, L; Bunau, O; Di Matteo, S; Fernandez-Rodriguez, J; Hamann-Borrero, JE; Herrero-Martin, J; Jacques, VLR; Johnson, RD; Juhin, A; Matsumura, T; Mazzoli, C; Mulders, AM; Nakao, H; Okamoto, J; Partzsch, S; Princep, AJ; Scagnoli, V; Strempfer, J; Vecchini, C; Wakabayashi, Y; Walker, HC; Wermeille, D; Yamasaki, Y
    Resonant Elastic X-Ray Scattering (REXS) has played a fundamental role in understanding electronic properties and in revealing hidden order, local symmetries and exotic states realized in correlated solids. This article reports on some of the relevant scientific contributions and technical advances over the last 20 years, by providing a list of related publications produced by various groups all around the world. The given perspective is that of a group of young scientists involved at various times in the investigation of the beauty of electronic ordering by the REXS technique. © 2012, Springer.