Soft X-ray resonant magnetic diffraction.

摘要: We have conducted the first soft x-ray diffraction experiments from a bulk single crystal, studying bilayer manganite ${\mathrm{L}\mathrm{a}}_{2\ensuremath{-}2x}{\mathrm{S}\mathrm{r}}_{1+2x}{\mathrm{M}\mathrm{n}}_{2}{\mathrm{O}}_{7}$ with $x=0.475$ in which we were able to access (002) Bragg reflection using x rays. The displays strong resonant enhancement at ${L}_{\mathrm{I}\mathrm{I}\mathrm{I}}$ and ${L}_{\mathrm{I}\mathrm{I}}$ manganese absorption edges. demonstrate that of magnetic (001) is extremely large, indeed so large it exceeds nonresonant diffraction. Resonant scattering $3d$ transition metal oxides only technique for atomic selective measurement spin, charge, orbital correlations materials, such as high temperature superconductors, colossal magnetoresistance manganites, charge stripe nickelates.