Mixed Heisenberg chains: I. The ground-state problem
- 20 October 1997
- journal article
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 9 (42) , 9031-9042
- https://doi.org/10.1088/0953-8984/9/42/017
Abstract
We consider a mechanism for competing interactions in alternating Heisenberg spin chains due to the formation of local spin-singlet pairs. The competition of spin-1 and spin-0 states reveals hidden Ising symmetry of such alternating chains.Keywords
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