Magnetization plateaux induced by a coupling to the lattice

Details Magnetization plateaux induced by a coupling to the lattice Magnetization plateaux induced by a coupling to the lattice

2005-11-15

arxiv.org/abs/cond-mat/0511368v1

Phys. Rev. Lett. 96, 117205 (2006)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.96.117205

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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