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Magnetization plateaux induced by a coupling to the lattice

T. Vekua·D. C. Cabra·A. Dobry·C. Gazza·D. Poilblanc
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Abstract

We investigate a simple model of a frustrated spin-1/2 Heisenberg chain coupled to adiabatic phonons under an external magnetic field. Using field theoretic methods complemented by extensive Density Matrix Renormalisation Group techniques generalized to include self-consistent lattice distortions, we show that magnetization plateaux at non-trivial rational values of the magnetization can be stabilized by the lattice coupling. We suggest that such a scenario could be relevant for some low dimensional frustrated spin-Peierls compounds.

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T. Vekua, D. C. Cabra, A. Dobry, C. Gazza, D. Poilblanc. 2005-11-15. Magnetization plateaux induced by a coupling to the lattice. https://doi.org/10.1103/physrevlett.96.117205

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