Critical reexamination of the experimental evidence of orbital ordering in LaMnO3 and La0.5Sr1.5MnO4

被引：177

作者：

Benfatto, M

Joly, Y

Natoli, CR

机构：

[1] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

[2] Univ Grenoble 1, CNRS, Lab Cristallog, F-38042 Grenoble 9, France

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.83.636

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The experimental evidence for orbital ordering in LaMnO3 and La0.5Sr1.5MnO4 is critically reexamined in the light of realistic calculations based on multiple scattering theory and finite difference method for the resonant x-ray scattered intensity at a forbidden ref lection. It is found that the dipole resonant x-ray diffraction at the Mn K-edge is not a suitable technique for the direct observation of the orbital ordering in the considered compounds.

引用

页码：636 / 639

页数：4

共 18 条

[1]

Belyakov V. A., 1976, Soviet Physics - Uspekhi, V18, P267, DOI 10.1070/PU1975v018n04ABEH004870

[2]

Cowan R D., 1981, The theory of atomic structure and spectra

[3] FORBIDDEN REFLECTIONS DUE TO ANISOTROPIC X-RAY SUSCEPTIBILITY OF CRYSTALS [J].