Nuclear spin relaxation and incommensurate magnetism in doped cuprates

Details Nuclear spin relaxation and incommensurate magnetism in doped cuprates Nuclear spin relaxation and incommensurate magnetism in doped cuprates

2004-02-24

arxiv.org/abs/cond-mat/0402589v1

Physics

Condensed Matter

Superconductivity

Contribution to "2004 University of Miami Workshop on Unconventional Superconductivity", Miami, January 2004; 9 pages, 3 figur

Scientific paper

Existing data on Cu-nuclear spin relaxation reveal two independent relaxation processes: the one that is temperature independent we link to incommensurate peaks seen by neutrons, while the ''universal'' temperature dependent contribution coincides with 1/{63}^T_{1}(T) for two-chain YBCO 124. We argue that this new result substitutes for a ''pseudogap'' regime in a broad class of high-T_c cuprates and stems from the 1st order phase transition that starts well above the superconductivity T_c but becomes frustrated because of broken electroneutrality in the CuO_2 plane.

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