Joint superexchange–Jahn-Teller mechanism for layered antiferromagnetism inLaMnO3

1997/10/22 by D. Feinberg, P. Germain, Philibert Germain +2 · 4 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Magnetic and transport properties of perovskites and related materials #Multiferroics and related materials #cond-mat.str-el

paper · pdf · doi:10.1103/physrevb.57.r5583

4 pages Latex

arxiv created 1997/10/22 · openalex publication_date 1998/03/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We propose a mechanism for A-type antiferromagnetism in orthorhombic LaMnO₃, compatible with the large Jahn-Teller splitting inferred from structural data. Orbital ordering resulting from Jahn-Teller distortions effectively leads to layered ordering (antiferromagnetic in the c axis and ferromagnetic in the ab plane) provided the in-plane distortion Q₂ is large enough, a condition generally fulfilled in existing data.

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