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|Title: ||Resonant soft x-ray powder diffraction study to determine the orbital ordering in A-site-ordered SmBaMn2O6.|
|Authors: ||Garcia-Fernandez, M|
|Keywords: ||Jahn-Teller Effect|
|Issue Date: ||Feb-2008|
|Publisher: ||American Physical Society|
|Citation: ||Garcia-Fernandez, M., Staub, U., Bodenthin, Y., Lawrence, S. M., Mulders, A. M., Buckley, C. E., et al. (2008). Resonant soft x-ray powder diffraction study to determine the orbital ordering in A-site-ordered SmBaMn2O6. Physical Review B, 77(6), 060402.|
|Abstract: ||Soft x-ray resonant powder diffraction has been performed at the Mn L-2,L-3 edges of A-site-ordered SmBaMn2O6. The energy and polarization dependences of the (1/4 1/4 0) reflection provide direct evidence for a (x(2) - z(2))/(y(2) - z(2))-type orbital ordering in contrast to single-layer manganite. The temperature dependence of the reflection indicates an orbital reorientation transition at approximate to 210 K, below which the charge- and orbital-ordered MnO2 sheets show AAAA-type of stacking. The concurring reduction of the ferromagnetic superexchange correlations leads to further charge localization. © 2008, American Physical Society|
|Appears in Collections:||Journal Articles|
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