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- W1624271346 abstract "The optical conductivity $ensuremath{sigma}(ensuremath{omega})$ of Sr${}_{4}$Ru${}_{3}$O${}_{10}$ has been studied by means of reflectivity measurements between 12 and 300 K both in the $ab$ planes (from 40 to 28 000 cm${}^{ensuremath{-}1}$) and along the $c$ axis (from 40 to 19 000 cm${}^{ensuremath{-}1}$). In the far and mid infrared, ${ensuremath{sigma}}_{ab}(ensuremath{omega})$ results from a superposition of a Drude term, with a plasma frequency which increases below the ferromagnetic transition at ${T}_{c}=105$ K, and of two bands in the infrared. One is peaked at about 400 cm${}^{ensuremath{-}1}$ for $T<$ 300 K, but softens to 300 cm${}^{ensuremath{-}1}$ at room temperature. The other one is peaked at 1300 cm${}^{ensuremath{-}1}$ and, below ${T}_{c}$, provides spectral weight to the Drude term, suggesting that it has a magnetic origin. Along the $c$ axis, ${ensuremath{sigma}}_{c}(ensuremath{omega})$ is instead that of a good insulator, with phonon peaks whose frequencies ${ensuremath{omega}}_{mathrm{ph}}$ regularly increase as $T$ decreases. For the mode at the highest frequency, however, which can be assigned to the apical oxygens of the RuO${}_{6}$ octahedra, both ${ensuremath{omega}}_{mathrm{ph}}$ and the intensity ${I}_{mathrm{ph}}$ have an anomalous behavior below ${T}_{c}$." @default.
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- W1624271346 date "2012-06-14" @default.
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- W1624271346 title "Anisotropic optical conductivity of Sr<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:msub><mml:mrow /><mml:mn>4</mml:mn></mml:msub></mml:math>Ru<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:msub><mml:mrow /><mml:mn>3</mml:mn></mml:msub></mml:math>O<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:msub><mml:mrow /><mml:mn>10</mml:mn></mml:msub></mml:math>" @default.
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- W1624271346 doi "https://doi.org/10.1103/physrevb.85.235124" @default.
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