Short-range spin- and pair-correlations: a variational wave-function
Abstract
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.
Cite
@article{arxiv.cond-mat/0309453,
title = {Short-range spin- and pair-correlations: a variational wave-function},
author = {D. van der Marel},
journal= {arXiv preprint arXiv:cond-mat/0309453},
year = {2007}
}
Comments
LaTeX, 11 pages, 3 figures in eps format references updated