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- W2056074181 abstract "We have investigated the threefold-charge ordering in ${text{La}}_{1/3}{text{Sr}}_{2/3}{text{FeO}}_{3}$ sample below ${T}_{text{CO}}$ $ensuremath{sim}200text{ }text{K}$. We have measured superlattice reflections, $q={a}^{ensuremath{ast}}(1/3text{ }1/3text{ }1/3)$, using the resonant x-ray scattering technique. The nonresonant intensities are consistent with a periodic structural modulation of both Fe and $text{Sr}(text{La}){text{O}}_{3}$ atomic planes. These displacements give rise to two nonequivalent Fe sites in the ratio of 2:1. Strong resonances are observed at the $text{Fe}text{ }K$ edge in the $ensuremath{sigma}text{ensuremath{-}}{ensuremath{sigma}}^{ensuremath{'}}$ geometry. These resonances did not exhibit azimuthal dependence. A charge disproportionation of 0.6 electrons is determined between the two Fe sites. Hence, the charge-ordered phase can be better understood as a charge-density-wave with a $dots{}{text{Fe}}^{3.3+}{text{Fe}}^{3.9+}{text{Fe}}^{3.9+}dots{}$ sequence along the cubic [111] direction." @default.
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- W2056074181 date "2009-01-27" @default.
- W2056074181 modified "2023-09-30" @default.
- W2056074181 title "Evidence for charge-density-wave nature of the charge-ordered phase in<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mtext>La</mml:mtext></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mo>/</mml:mo><mml:mn>3</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mtext>Sr</mml:mtext></mml:mrow><mml:mrow><mml:mn>2</mml:mn><mml:mo>/</mml:mo><mml:mn>3</mml:mn></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mtext>FeO</mml:mtext></mml:mrow><mml…" @default.
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- W2056074181 doi "https://doi.org/10.1103/physrevb.79.045121" @default.
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