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000009413 084__ $$2WoS$$aPhysics, Condensed Matter
000009413 1001_ $$0P:(DE-Juel1)144092$$aLi, H.-F.$$b0$$uFZJ
000009413 245__ $$aSoft x-ray resonant scattering study of single-crystal LaSr2Mn2O7
000009413 260__ $$aBerlin$$bSpringer$$c2010
000009413 300__ $$a457 - 461
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000009413 440_0 $$01982$$aEuropean Physical Journal B$$v74$$x1434-6028$$y4
000009413 500__ $$aWe are grateful for the excellent technical support from BESSY-II, Germany. This work was partially supported by the BMBF under contract No. O3ZA6BC2.
000009413 520__ $$aSoft X-ray resonant scattering studies at the Mn L-II,L- III- and the La M-IV,M- V- edges of single-crystal LaSr2Mn2O7 are reported. At low temperatures, below T-N a parts per thousand 160 K, energy scans with a fixed momentum transfer at the A-type antiferromagnetic (0 0 1) reflection around the Mn L-II,L- III-edges with incident linear sigma and pi polarizations show strong resonant enhancements. The splitting of the energy spectra around the Mn L-II,L- III-edges may indicate the presence of a mixed valence state, e.g., Mn3+/Mn4+. The relative intensities of the resonance and the clear shoulder-feature as well as the strong incident sigma and pi polarization dependences strongly indicate its complex electronic origin. Unexpected enhancement of the charge Bragg (0 0 2) reflection at the La M-IV,M- V-edges with sigma polarization has been observed up to 300 K, with an anomaly appearing around the orbital-ordering transition temperature, T-OO a parts per thousand 220 K, suggesting a strong coupling (competition) between them.
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000009413 7001_ $$0P:(DE-Juel1)VDB57858$$aPersson, J.$$b4$$uFZJ
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000009413 7001_ $$0P:(DE-HGF)0$$aVaknin, D.$$b7
000009413 7001_ $$0P:(DE-Juel1)130572$$aBrückel, T.$$b8$$uFZJ
000009413 773__ $$0PERI:(DE-600)1459068-2$$a10.1140/epjb/e2010-00117-3$$gVol. 74, p. 457 - 461$$p457 - 461$$q74<457 - 461$$tThe @European physical journal / B$$v74$$x1434-6028$$y2010
000009413 8567_ $$uhttp://dx.doi.org/10.1140/epjb/e2010-00117-3
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