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- W95045911 abstract "We have investigated the charge dynamics of the doped carriers in a prototypical double-exchange ferromagnet ${mathrm{La}}_{1ensuremath{-}x}{mathrm{Sr}}_{x}{mathrm{MnO}}_{3}$ by reflectivity measurements on cleaved surfaces of the single crystals. Even for wide-band ${mathrm{La}}_{0.6}{mathrm{Sr}}_{0.4}{mathrm{MnO}}_{3},$ which shows a metallic dc resistivity over the entire temperature range up to 1000 K, the optical conductivity $ensuremath{sigma}(ensuremath{omega})$ deviates from a simple Drude response; it shows a slowly decaying $(ensuremath{propto}{ensuremath{omega}}^{ensuremath{-}1})$ quasi-Drude behavior below a certain temperature ${T}^{*},$ while above ${T}^{*}$ it is characterized by a finite-energy peak instead of the Drude peak. Al substitution affects $ensuremath{sigma}(ensuremath{omega})$ over a wide energy range up to 1 eV or higher, which is contrary to the prediction from the simple Drude picture. These characteristics can be well described by the one-component description." @default.
- W95045911 created "2016-06-24" @default.
- W95045911 creator A5055575436 @default.
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- W95045911 date "2002-05-13" @default.
- W95045911 modified "2023-09-25" @default.
- W95045911 title "Charge dynamics of a double-exchange ferromagnet<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>La</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mi>−</mml:mi><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>Sr</mml:mi></mml:mrow><mml:mrow><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal…" @default.
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- W95045911 doi "https://doi.org/10.1103/physrevb.65.184436" @default.
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