Spin-1/2 periodic nonuniform XX chains and the spin-Peierls instability
O. Derzhko, J. Richter, O. Zaburannyi
TL;DR
This paper derives exact magnon density of states for a nonuniform spin-1/2 XX chain with Dzyaloshinskii-Moriya interaction and analyzes its stability against spin-Peierls dimerization.
Contribution
It provides an exact analytical solution for the magnon density of states in a nonuniform XX chain with Dzyaloshinskii-Moriya interaction and studies its spin-Peierls instability.
Findings
Exact magnon density of states obtained
Chain stability analyzed with respect to dimerization
Insights into the effects of nonuniformity and Dzyaloshinskii-Moriya interaction
Abstract
Using continued fractions we obtained the exact result for the density of magnon states of the regularly alternating spin-1/2 XX chain with Dzyaloshinskii-Moriya interaction. We examined the stability of the magnetic chain with respect to the spin-Peierls dimerization.
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Taxonomy
TopicsCold Atom Physics and Bose-Einstein Condensates · Physics of Superconductivity and Magnetism · Theoretical and Computational Physics