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.

Report LPQTH-93/07, Latex file, 7 pages, 2 figures on request

References in corpus (2)

• Binding of holes and pair spectral function in the t-J model
• Even and odd-frequency pairing correlations in 1-D t-J-h model: a comparative study

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