Publication
Journal of Applied Physics
Paper

Magnetism and superconductivity in La2-xSrxCuO4-y (invited)

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Abstract

We report the results of resistivity and magnetic susceptibility measurements of La2-xSrxCuO 4-y for 0≤x≤0.20. The various features (superconductivity, spin-density wave state, and localization) are consistent with a model of weakly correlated two-dimensional electrons in which van Hove singularities of the band structure near the Fermi level play a determinant role. We also emphasize that the electron localization observed near half-filling of the conduction band at x≅0.04 can be attributed to the effect of correlations boosted by electron Umklapp scattering in a nearly nested two-dimensional Fermi surface. We recall that similar effects have been observed in half-filled band organic conductors and superconductors.

Date

01 Dec 1988

Publication

Journal of Applied Physics

Authors

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