Antiferromagnetic rare region effect in $P{r}_{0.5}C{a}_{0.5}Mn{O}_3$

Abstract

We present evidence of coexistence of electron paramagnetic resonance signal and anti-ferromagnetic resonance signals above the anti-ferromagnetic (AFM) transition ($T_N$) in $P{r}_{0.5}C{a}_{0.5}Mn{O}_3$. We identify the latter with AFM rare regions within the Griffiths-like phase scenario with the associated temperature scale $T^{\ast }$ extending above room temperature.

6 pages, 5 figures