Normal-state magnetic susceptibility in a bilayer cuprate
arXiv:cond-mat/9704081 · doi:10.1103/PhysRevB.56.R2952
Abstract
The magnetic susceptibility of high-T_c superconductors is investigated in the normal state using a coupled bilayer model. While this model describes in a natural way the normal-state pseudogaps seen in c-axis optical conductivity on underdoped samples, it predicts a weakly increasing susceptibility with decreasing temperature and cannot explain the magnetic pseudogaps exhibited in NMR measurements. Our result, together with some experimental evidence suggest that the mechanism governing the c-axis optical pseudogap is different from that for the plane magnetic pseudogap.
5 pages, 2 figures