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- W2039969194 abstract "By using the unrestricted Hartree-Fock approximation and the real space recursion method, we have investigated the electronic structures of the antiferromagnetic and paramagnetic states of ${mathrm{YBaCo}}_{2}{mathrm{O}}_{5}.$ The random spin is dealt with by the usual binary alloy coherent potential approximation when temperature is above ${T}_{N}$ (N'eel temperature). It is found that the paramagnetic spectrum width does get broadened in comparison with that of antiferromagnetic state at low temperature due to the delocalization of $mathrm{Co}ensuremath{-}d$ electrons resulted from the spin scattering. This also causes a pileup of density of states at Fermi energy. Our results offer a direct connection between the calculated electronic structure and the experimentally observed resistance decrease near ${T}_{N}.$" @default.
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- W2039969194 date "2002-01-08" @default.
- W2039969194 modified "2023-10-12" @default.
- W2039969194 title "Theoretical study of the paramagnetic density of states of<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>YBaCo</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant=normal>O</mml:mi></mml:mrow><mml:mrow><mml:mn>5</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>" @default.
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- W2039969194 doi "https://doi.org/10.1103/physrevb.65.052407" @default.
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