From antiferromagnetism to d-wave superconductivity in the 2D t-J model

Details From antiferromagnetism to d-wave superconductivity in the 2D t-J model From antiferromagnetism to d-wave superconductivity in the 2D t-J model

1999-11-30

arxiv.org/abs/cond-mat/9911478v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 5 figures

Scientific paper

10.1103/PhysRevB.61.R11894

We have found that the two dimensional t-J model, for the physical parameter range J/t = 0.4 reproduces the main experimental qualitative features of High-Tc copper oxide superconductors: d-wave superconducting correlations are strongly enhanced upon small doping and clear evidence of off diagonal long range order is found at the optimal doping \delta ~ 0.15. On the other hand antiferromagnetic long range order, clearly present at zero hole doping, is suppressed at small hole density with clear absence of antiferromagnetism at \delta >~ 0.1.

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