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Destruction of long-range antiferromagnetic order by hole doping

F. Carvalho Dias·I. R. Pimentel·R. Orbach
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Abstract

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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F. Carvalho Dias, I. R. Pimentel, R. Orbach. 2000-01-20. Destruction of long-range antiferromagnetic order by hole doping. https://doi.org/10.1103/physrevb.61.1371

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