Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
1999-08-27
Phys. Rev. B 60, R16263 (1999).
Physics
Condensed Matter
Strongly Correlated Electrons
9 pages, 3 figures
Scientific paper
10.1103/PhysRevB.60.R16263
We report on the optical properties of the hole-doped manganites La_0.7Ca_0.3MnO_3 and La_0.7Ca_0.3MnO_3. Transmission and reflection of thin films are measured in the infrared at temperatures from 10 - 150 K using Fourier-transform spectroscopy. The scattering rate and optical mass are obtained by fitting the far-infrared transmission to a Drude model. The scattering rate shows a T^2 dependence with temperature. The optical mass enhancement differs only slightly from specific heat results. In addition, we compare the infrared spectral weight to band structure calculations [M. Quijada et al., Phys. Rev. B 58, 16093 (1998)].
Biswas Amlan
Drew Dennis H.
Greene Richard L.
Rajeswari M.
Robson M. C.
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