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Magnetization Plateaux in Bethe Ansatz Solvable Spin-S Ladders

M. Maslen·M. T. Batchelor·J. de Gier
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Abstract

We examine the properties of the Bethe Ansatz solvable two- and three-leg spin-$S$ ladders. These models include Heisenberg rung interactions of arbitrary strength and thus capture the physics of the spin-$S$ Heisenberg ladders for strong rung coupling. The discrete values derived for the magnetization plateaux are seen to fit with the general prediction based on the Lieb-Schultz- Mattis theorem. We examine the magnetic phase diagram of the spin-1 ladder in detail and find an extended magnetization plateau at the fractional value $ = {1/2}$ in agreement with the experimental observation for the spin-1 ladder compound BIP-TENO.

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M. Maslen, M. T. Batchelor, J. de Gier. 2003-02-07. Magnetization Plateaux in Bethe Ansatz Solvable Spin-S Ladders. https://doi.org/10.1103/physrevb.68.024418

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