Short-range spin- and pair-correlations: a variational wave-function

Details Short-range spin- and pair-correlations: a variational wave-function Short-range spin- and pair-correlations: a variational wave-function

2003-09-19

arxiv.org/abs/cond-mat/0309453v2

Synthetic Metals 141, 149-153 (2003)

Physics

Condensed Matter

LaTeX, 11 pages, 3 figures in eps format references updated

Scientific paper

A many-body wavefuction is postulated, which is sufficiently general to describe superconducting pair-correlations, and/or spin-correlations, which can occur either as long-range order or as finite-range correlations. The proposed wave-function appears to summarize some of the more relevant aspects of the rich phase-diagram of the high-Tc cuprates. Some of the states represented by this wavefunction are reviewed: For superconductivity in the background of robust anti-ferromagnetism, the Cooper-pairs are shown to be a superposition of spinquantum numbers S=0 and S=1. If the anti-ferromagnetism is weak, a continuous super-symmetric rotation is identified connecting s-wave superconductivity to anti-ferromagnetism.

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