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arXiv · 1111.3430

Frustration-Induced Ferrimagnetism in Heisenberg Spin Chains

Tokuro Shimokawa·Hiroki Nakano
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Abstract

We study ground-state properties of the Heisenberg frustrated spin chain with interactions up to fourth nearest neighbors by the exact-diagonalization method and the density matrix renormalization group method. We find that ferrimagnetism is realized not only in the case of S=1/2 but also S=1 despite that there is only a single spin site in each unit cell determined from the shape of the Hamiltonian. Our numerical results suggest that a "multi-sublattice structure" is not required for the occurrence of ferrimagnetism in quantum spin systems with isotropic interactions.

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Tokuro Shimokawa, Hiroki Nakano. 2011-11-15. Frustration-Induced Ferrimagnetism in Heisenberg Spin Chains. https://doi.org/10.1143/jpsj.80.125003

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