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arxiv: 1102.0847 · v1 · pith:2OQNFQGTnew · submitted 2011-02-04 · ❄️ cond-mat.stat-mech

Ground-state properties of the spin-1/2 Heisenberg-Ising bond alternating chain with Dzyaloshinskii-Moriya interaction

classification ❄️ cond-mat.stat-mech
keywords dzyaloshinskii-moriyaground-statealternatingbondchainenergyheisenberg-isinginteraction
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Ground-state energy is exactly calculated for the spin-1/2 Heisenberg-Ising bond alternating chain with the Dzyaloshinskii-Moriya interaction. Under certain condition, which relates a strength of the Ising, Heisenberg and Dzyaloshinskii-Moriya interactions, the ground-state energy exhibits an interesting nonanalytic behavior accompanied with a gapless excitation spectrum.

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