|Title||Resonant micro-Raman study of Nd0.5Sr0.5MnO3 |
|Publication Type||Journal Article |
|Year of Publication||2005 |
|Authors||Asselin S, Jandl S, Fournier P, Mukhin AA, Ivanov YV, Balbashov AM |
|Journal||Journal of Physics: Condensed Matter |
|Abstract||We present a resonant micro-Raman study of a high-quality Nd0.5Sr0.5MnO3 single crystal as a function of temperature. The detected phonons trace the evolution between the paramagnetic, ferromagnetic, A-type antiferromagnetic and CE-type antiferromagnetic charge and orbital ordering phase transitions. The 16 detected phonon frequencies at T$<$Tco are compared to NdMnO3 and La0.5Ca0.5MnO3 observed frequencies, indicating the presence of coherent Jahn-Teller distortions and strong similarities between the CE-type Nd0.5Sr0.5MnO3 and La0.5Ca0.5MnO3 phases.