Antiferromagnetic Correlations and the Pseudogap in HTS Cuprates

Details Antiferromagnetic Correlations and the Pseudogap in HTS Cuprates Antiferromagnetic Correlations and the Pseudogap in HTS Cuprates

1999-11-26

arxiv.org/abs/cond-mat/9911422v1

Physics

Condensed Matter

Superconductivity

3 pages, 2 figures, invited paper presented at ISS-99, to be published Advances in Superconductivity XII (Springer Verlag, Tok

Scientific paper

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.

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