Title: Orbital ordering and superexchange in manganite oxides
Abstract: The magnetic couplings in insulating ${\mathrm{LaMnO}}_{3}$, ${\mathrm{CaMnO}}_{3}$, and the planar analogs ${\mathrm{La}}_{\mathrm{n}+1}$${\mathrm{Mn}}_{\mathrm{n}}$${\mathrm{O}}_{3\mathrm{n}+1}$ are estimated using standard superexchange arguments. The orbital ordering observed in ${\mathrm{LaMnO}}_{3}$ is found to lead to the observed magnetic exchange constants if the effective Mn on-site interaction ${\mathrm{U}}_{\mathrm{Mn}}$ is larger than the charge transfer energy. Differences between the pseudocubic and the planar materials are accounted for. The effect of doping is discussed.
Publication Year: 1997
Publication Date: 1997-03-01
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 83
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot