Orbital ordering and resonant x-ray scattering in layered manganites

被引：14

作者：

Ishihara, S ^{[1
]}

Maekawa, S ^{[1
]}

机构：

[1] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

来源：

PHYSICAL REVIEW B | 2000年 / 62卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.62.5690

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In layered manganites with orbital and charge orderings, the degeneracy of the Mn 4p orbitals as well as the 3d ones is lifted by the effects of the 4p bands and the local Coulomb interactions. We formulate the atomic scattering factor for the resonant x-ray scattering in the memory function method by taking into account these effects on an equal footing. It is shown that the polarization dependences of the scattering intensities at the orbital and charge superlattice reflections observed in LaSr2Mn2O7 are caused by the local and itinerant characters of 4p electrons, respectively. We examine the type of the orbital ordered state.

引用

页码：5690 / 5695

页数：6

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