Spinless fermions versus spin waves in describing antiferromagnetic Heisenberg ladders

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Abstract

We investigate magnetic properties of the spin-1/2 two-leg Heisenberg ladder antiferromagnet developing two formulations, one of which starts from the Jordan-Wigner transformation along an elaborately ordered path, and the other of which modifies the conventional spin-wave theory so as to restore the sublattice symmetry. The static and dynamic quantities are calculated and a novel field dependence of the nuclear spin-lattice relaxation rate, which is peculiar to one-dimensional spin-gapped antiferromagnets, is pointed out in particular. © 2003 Elsevier B.V. All rights reserved.

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Hori, H., & Yamamoto, S. (2004). Spinless fermions versus spin waves in describing antiferromagnetic Heisenberg ladders. In Journal of Magnetism and Magnetic Materials (Vol. 272–276, pp. 269–270). Elsevier. https://doi.org/10.1016/j.jmmm.2003.12.1239

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