Publication Type:Journal Article
Source:Physical Review Letters, Volume 77, Number 10, p.2081-2084 (1996)
Keywords:Calculations, Carrier concentration, Double exchange interaction, Energy transfer, Ferromagnetic phase, Ferromagnetism, Fourier transform spectrometers, Jahn Teller effects, Magnetic field effects, Mathematical models, Monochromators, Neodymium compounds, Neodymium strontium manganate, optical properties, Optical variables measurement, Spectrometers, superconducting films, Thermal effects
The optical properties of Nd0.7Sr0.3MnO3 thin films have been studied over a broad spectral range, at temperatures down to 15 K and magnetic fields up to 8.9 T. A large transfer of spectral weight from high energy to low energy occurs as this material is cooled into the ferromagnetic phase, or as the magnetic field is increased near the phase boundary. The optical data are found to be consistent with models that include both the double-exchange interaction and the dynamic Jahn-Teller effect on the Mn3+eglevels. © 1996 The American Physical Society.
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