U. Rödiger, J. Yu, et al.
Physical Review B - CMMP
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.
U. Rödiger, J. Yu, et al.
Physical Review B - CMMP
Rudolf Schäfer, Alex Hubert, et al.
IEEE Transactions on Magnetics
M. Tsoi, J.Z. Sun, et al.
Physical Review Letters
R. Rajaram, A. Ney, et al.
Journal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures