Spin correlation functions and Néel order in the 2D Heisenberg model: Effects of spatial anisotropy

Details Spin correlation functions and Néel order in the 2D Heisenberg model: Effects of spatial anisotropy Spin correlation functions and Néel order in the 2D Heisenberg model: Effects of spatial anisotropy

1999-10-07

arxiv.org/abs/cond-mat/9910094v1

Physica B 281 & 282, 819 (2000).

Physics

Condensed Matter

Strongly Correlated Electrons

2 pages, 2 figues, Proceedings Yamada Conference on Strongly Correlated Electron Systems, Nagano, Japan 1999

Scientific paper

10.1016/S0921-4526(99)01064-9

The ground-state properties of the square-lattice spin-1/2 Heisenberg antiferromagnet with spatially anisotropic couplings are investigated by Green's-function projection approaches. The staggered magnetization and the two-spin correlators are calculated; the competition between magnetic long- and short-range order is discussed in comparison with experiments on $\rm Sr_2[Ca_2]CuO_3$.

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