English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

From a Monte Carlo study of the ferromagnetic Kondo lattice model for dopedmanganites, including the antiferromagnetic superexchange interaction($J_{AF}$), we found that the ferromagnetic ordering was suppressed as $J_{AF}$increased. The ferromagnetic transition temperature $T_c$, as obtained from amean field fit to the calculated susceptibilities, was found to decreasemonotonically with increasing $J_{AF}$. Further, the suppression in $T_c$scales with the bandwidth narrowing induced by the antiferromagneticfrustration originating from $J_{AF}$. From these results, we propose that thechange in the superexchange interaction strength between the $t_{2g}$ electronsof the Mn ions is one of the mechanisms responsible for the suppression in$T_c$ observed in manganites of the type(La$_{0.7-y}$Pr$_{y}$)Ca$_{0.3}$MnO$_3$.Comment: 5 pages, 6 figures. To appear in PR

Suppression of ferromagnetic ordering in doped manganites: Effects of the superexchange interaction