Destruction of long-range antiferromagnetic order by hole doping

Details Destruction of long-range antiferromagnetic order by hole doping Destruction of long-range antiferromagnetic order by hole doping

2000-01-20

arxiv.org/abs/cond-mat/0001289v1

Phys. Rev. B 61, 1371 (2000)

Physics

Condensed Matter

Strongly Correlated Electrons

12 pages, 2 figures

Scientific paper

10.1103/PhysRevB.61.1371

We study the renormalization of the staggered magnetization of a two-dimensional antiferromagnet as a function of hole doping, in the framework of the t-J model. It is shown that the motion of holes generates decay of spin waves into ''particle-hole'' pairs, which causes the destruction of the long-range magnetic order at a small hole concentration. This effect is mainly determined by the coherent motion of holes. The value obtained for the critical hole concentration, of a few percent, is consistent with experimental data for the doped copper oxide high-Tc superconductors.

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