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- W126827095 abstract "The unusual Hall coefficient ${mathit{R}}_{mathit{H}}$ observed in ${mathrm{La}}_{2mathrm{ensuremath{-}}mathit{x}}$${mathrm{Sr}}_{mathit{x}}$${mathrm{CuO}}_{4}$ single crystals is explained in terms of strong electron-electron scattering in a nearly half-filled Cu ${mathit{d}}_{mathit{x}}^{2}$-${mathit{y}}^{2}$ band ${mathit{E}}_{mathit{l}}$, together with a small number of holes in another band. Including multiple-scattering terms beyond the Born approximation yields an electron mobility that decreases dramatically as the Sr content is lowered toward xensuremath{simeq}0.06. There, a metal-insulator transition is predicted by our analysis for an on-site Coulomb coupling U of intermediate strength. Hence the minority-hole carriers yield a net positive ${mathit{R}}_{mathit{H}}$ for x0.4 by virtue of their higher mobility. Surprisingly, despite changes in ${mathit{R}}_{mathit{H}}$ by orders of magnitude, the calculated plasma frequency remains nearly constant with ${mathrm{ensuremath{omega}}}_{mathit{p}}$ensuremath{simeq}0.8 eV over the metallic x range, in agreement with reflectivity data." @default.
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- W126827095 title "Hall effect and electronic structure of<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>2</mml:mn><mml:mi mathvariant=normal>−</mml:mi><mml:mi mathvariant=italic>x</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>Sr</mml:mi></mml:mrow…" @default.
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- W126827095 doi "https://doi.org/10.1103/physrevb.42.399" @default.
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