Antiferromagnetic Correlations and the Pseudogap in HTS Cuprates
arXiv:cond-mat/9911422
Abstract
Evidence is presented from NMR 1/T1T and ARPES data for the sudden disappearance of 2D antiferromagnetic (AF) correlations in the lightly overdoped region (p=0.19) at the T=0 metal-insulator transition where the pseudogap energy falls to zero. AF fluctuations thus appear to be intimately associated with the pseudogap and serve primarily to weaken superconductivity, strongly reducing the condensation energy and superfluid density.
3 pages, 2 figures, invited paper presented at ISS-99, to be published Advances in Superconductivity XII (Springer Verlag, Tokyo)