Doped planar quantum antiferromagnets with striped phases

Details Doped planar quantum antiferromagnets with striped phases Doped planar quantum antiferromagnets with striped phases

1995-11-15

arxiv.org/abs/cond-mat/9511079v2

Physics

Condensed Matter

4 pages, RevteX, 2 figures, new references added, minor changes in wording and corrections of some formulas

Scientific paper

10.1103/PhysRevLett.76.2165

We study the properties of the striped phases that have been proposed for the doped cuprate planar quantum antiferromagnets. We invoke an effective, spatially anisotropic, non-linear sigma model in two space dimensions. Our theoretical predictions are in {\it quantitative} agreement with recent experiments. We focus on (i) the staggered magnetization at $T=0$ and (ii) the N\'eel temperature, as functions of doping; these have been measured recently in La${}_{2-x}$ Sr${}_x$ Cu O${}_4$ with $0 \leq x \leq 0.018$. Good agreement with experiment is obtained using parameters determined previously and independently for this system. These results support the proposal that the low doping (antiferromagnetic) phase of the cuprates has a striped configuration.

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