Isotope effects and the charge gap formation in the charge ordered phase of colossal magnetoresistance manganites

Abstract

Giant oxygen isotope effects observed in colossal magnetoresistance manganites are investigated by employing the combined model of the double exchange and interacting lattice polaron mechanism. We have shown that the isotope effects on $T_C$ in the metallic phase and $T_{CO}$ in the charge ordered phase of manganites can be explained well in terms of the double exchange and polaron narrowing factors with reasonable physical parameters.

5 pages, 3 figures

References in corpus (3)

• Double Exchange Alone Does Not Explain the Resistivity of $L{a}_{1-x}S{r}_{x}Mn{O}_3$
• Dynamic Jahn-Teller Effect and Colossal Magnetoresistance in $L{a}_{1-x}{A}_{x}Mn{O}_3$
• Metal-insulator transition induced by 16O -18O oxygen isotope exchange in colossal negative magnetoresistance manganites

Cited by in corpus (4)

• Manganites at Quarter Filling: Role of Jahn-Teller Interactions
• Oxygen Isotope Effect on the Spin State Transition in (Pr${}_{0.7}$Sm${}_{0.3}$)${}_{0.7}$Ca${}_{0.3}$CoO${}_3$
• Influence of oxygen isotope exchange on the ground state of manganites
• Charge ordering in half-doped Pr(Nd)${}_{0.5}$Ca${}_{0.5}$MnO${}_3$ under magnetic field