Spin-Peierls instability in a quantum spin chain with Dzyaloshinskii-Moriya interaction

Details Spin-Peierls instability in a quantum spin chain with Dzyaloshinskii-Moriya interaction Spin-Peierls instability in a quantum spin chain with Dzyaloshinskii-Moriya interaction

2000-10-07

arxiv.org/abs/cond-mat/0010118v1

Journal of Physics: Condensed Matter, Volume 12, Number 40, 9 October 2000, p. 8661 - 8668

Physics

Condensed Matter

12 pages, latex, 3 figures

Scientific paper

10.1088/0953-8984/12/40/310

We analysed the ground state energy of some dimerized spin-1/2 transverse XX and Heisenberg chains with Dzyaloshinskii-Moriya (DM) interaction to study the influence of the latter interaction on the spin-Peierls instability. We found that DM interaction may act either in favour of the dimerization or against it. The actual result depends on the dependence of DM interaction on the distortion amplitude in comparison with such dependence for the isotropic exchange interaction.

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