Temperature-dependent scattering rate and optical mass of ferromagnetic metallic manganites

Article

关键词: TO-POLARON CROSSOVER;    DOUBLE-EXCHANGE;    COLOSSAL-MAGNETORESISTANCE;    LA1-XSRXMNO3;    TRANSPORT;    SPECTRA;   

DOI  :  10.1103/PhysRevB.60.R16263

来源: SCIE

【 摘 要 】

We report on the optical properties of the hole-doped manganites La0.7Ca0.3MnO3 and La0.7Sr0.3MnO3. Transmission and reflection of thin films are measured in the infrared at temperatures from 10 to 150 K using Fourier-transform spectroscopy. The scattering rate and optical mass are obtained by fitting the far-infrared transmission data 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. [S0163-1829(99)52144-9].

【 授权许可】

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