Raman Investigation of the Layered Manganese Perovskite La1.2 Sr1.8 Mn207
D B. Romero, V B. Podobedov, A Weber, Joseph P. Rice, J.F. Mitchell, R P. Sharma, H D. Drew
We report the results of a detailed polarization and temperature dependence study of the Raman scattering from La1.2Sr1.8Mn207. The Raman spectra reveal three general spectral features. First, there are sharp peaks due to long-wavelength optic phonons. Phonons, attributed to the distortion of the MNO6 octahedra, reveal an anomalous behavior which correlates with the transition from a paramagnetic-insulating (Pl) to a ferromagnetic-metallic (FM) phase at a critical temperature Tc. Second, there is an electronic continuum that is suppressed for w <500 cm-1 at T<
, Podobedov, V.
, Weber, A.
, Rice, J.
, Mitchell, J.
, Sharma, R.
and Drew, H.
Raman Investigation of the Layered Manganese Perovskite La1.2 Sr1.8 Mn207, Materials Research Society Symposium
(Accessed June 3, 2023)