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Joint superexchange--Jahn-Teller mechanism for A-type antiferromagnetism in $LaMnO_3$ | | D. Feinberg
; P. Germain
; M. Grilli
; G. Seibold
; | | Date: |
22 Oct 1997 | | Subject: | Strongly Correlated Electrons | cond-mat.str-el | | Affiliation: | 1,2), and G. Seibold ( Istituto di Fisica della Materia e Dipartimento di Fisica, Universita’ di Roma ``La Sapienza’’, Laboratoire des Proprietes Electroniques des Solides, CNRS, Grenoble, France | | Abstract: | We propose a mechanism for A-type antiferromagnetism in orthorombic LaMnO_3, compatible with the large Jahn-Teller splitting inferred from structural data. Orbital ordering resulting from Jahn-Teller distortions effectively leads to A-type ordering (antiferromagnetic in the c axis and ferromagnetic in the ab plane) provided the in-plane distorsion Q_2 is large enough, a condition generally fulfilled in existing data. | | Source: | arXiv, cond-mat/9710233 | | Services: | Forum | Review | PDF | Favorites | |
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