Resonant inelastic x-ray scattering study of hole-doped manganites La1-xSrxMnO3 (x=0.2 and 0.4)

Abstract

Electronic excitations near the Fermi energy in the hole doped manganese oxides (La1-xSrxMnO3, x=0.2 and 0.4) have been elucidated by using the resonant inelastic x-ray scattering (RIXS) method. A doping effect in the strongly correlated electron systems has been observed for the first time. The scattering spectra show that a salient peak appears in low energies indicating the persistence of the Mott gap. At the same time, the energy gap is partly filled by doping holes and the energy of the spectral weight shifts toward lower energies. The excitation spectra show little change in the momentum space as is in undoped LaMnO3, but the scattering intensities in the low energy excitations of x=0.2 are anisotropic as well as temperature dependent, which indicates a reminiscence of the orbital nature.

Cited by in corpus (4)

• Mott gap excitations in twin-free YBa2Cu3O7-d (Tc = 93 K) studied by RIXS
• Theoretical Analysis of Resonant Inelastic X-Ray Scattering Spectra in LaMnO3
• d-d Excitations in Bilayer Manganites Probed by Resonant Inelastic X-ray Scattering
• Low temperature dynamic polaron liquid in a manganite exhibiting colossal magnetoresistance