Hole pairing and phonon dynamics in generalized 2D $t-J-$Holstein models

Details Hole pairing and phonon dynamics in generalized 2D $t-J-$Holstein models Hole pairing and phonon dynamics in generalized 2D $t-J-$Holstein models

1996-05-31

arxiv.org/abs/cond-mat/9605198v1

Physics

Condensed Matter

4 pages LaTeX and 6 PostScript figures in uuencoded form

Scientific paper

10.1103/PhysRevB.55.8445

The formation of hole pairs in the planar t-J model is studied in the presence of independent {\it dynamic} vibrations of the in-plane oxygen atoms. In-plane (breathing modes) and out-of-plane (buckling modes) displacements are considered. We find strong evidences in favor of a stabilization of the two hole bound pair by out-of-plane vibrations of the in-plane oxygens. On the contrary, the breathing modes weaken the binding energy of the hole pair. These results are discussed in the context of the superconducting cuprates.

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