Orbital Ordering inLa0.5Sr1.5MnO4Studied by Soft X-Ray Linear Dichroism

2003/12/30 by D. J. Huang, W. B. Wu, Wen-Pei Wu +15 · 2 citations
Chemistry · Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Antiferromagnetism #Biology #Chemistry #Condensed matter physics #Crystallography #Distortion (music) #Magnetic and transport properties of perovskites and related materials #Physics #Rare-earth and actinide compounds #Type (biology) #cond-mat.str-el

paper · pdf · doi:10.1103/physrevlett.92.087202

5 pages, 5 figures, to be published in PRL

arxiv created 2003/12/30 · openalex publication_date 2004/02/26 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We found that the conventional model of orbital-ordering of 3x²\ensuremath-r²/3y²\ensuremath-r² type in the e_g states of La_0.5Sr_1.5MnO₄ is incompatible with measurements of linear dichroism in the Mn 2p-edge x-ray absorption, whereas these e_g states exhibit predominantly cross-type orbital ordering of x²\ensuremath-z²/y²\ensuremath-z². LDA+U band-structure calculations reveal that such a cross-type orbital-ordering results from a combined effect of antiferromagnetic structure, Jahn-Teller distortion, and on-site Coulomb interactions.

Citations

• Charge-Orbital Stripe Structure inLa1−xCaxMnO3(x<mml:mspace/>=<mml:mspace/>1/2,2/3)
• Orbital ordering in the manganites: Resonant x-ray scattering predictions at the manganeseLIIandLIIIedges

Cited by

• Crystal-Field Level Inversion in Lightly Mn-DopedSr3Ru2O7
• Resonant soft x-ray scattering investigation of orbital and magnetic ordering inLa0.5Sr1.5MnO4