Spin-Peierls instability in the spin-1/2 transverse XX chain with Dzyaloshinskii-Moriya interaction

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We calculate exactly the density of magnon states of the regularly alternating spin-1/2 XX chain with Dzyaloshinskii-Moriya interaction. The obtained results permit us to examine the stability of the chain with respect to spin-Peierls dimerization. We found that depending on the dependences of Dzyaloshinskii-Moriya interaction on distortion amplitude it may act either in favour of the dimerization or against the dimerization.
9 pages with 2 figures included

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Condensed Matter

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http://salesiana.dossiersoluciones.com/handle/123456789/15907

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0001014
 http://arxiv.org/abs/cond-mat/0001014

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arXiv