arXiv · cond-mat/9306030
On the Internal Structure of the Singlet d$_{X^2-Y^2}$ Hole Pair in an Antiferromagnet
Abstract
Exact diagonalizations of two dimensional small t--J clusters reveal dominant hole-hole correlations at distance $\sqrt{2}$ (ie between holes on next nearest neighbor sites). A new form of singlet $d_{x^2-y^2}$ pair operator is proposed to account for the spatial extention of the two hole-bound pair beyond nearest neighbor sites.
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Didier Poilblanc. 1993-06-10. On the Internal Structure of the Singlet d$_{X^2-Y^2}$ Hole Pair in an Antiferromagnet. https://doi.org/10.1103/physrevb.49.1477
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