We investigate a model of a frustrated spin-1/2 Heisenberg chain coupled to adiabatic phonons with a general form of magnetoelastic coupling. For large enough frustration and lattice coupling, a new tetramerized phase with three different bond lengths is found. We argue that the zigzag spin-1/2 chain LiV2O5 might be a good candidate to observe such a phase.

Tetramerization of a frustrated spin-1/2 chain

BECCA F;
2003-01-01

Abstract

We investigate a model of a frustrated spin-1/2 Heisenberg chain coupled to adiabatic phonons with a general form of magnetoelastic coupling. For large enough frustration and lattice coupling, a new tetramerized phase with three different bond lengths is found. We argue that the zigzag spin-1/2 chain LiV2O5 might be a good candidate to observe such a phase.
2003
Pubblicato
http://link.aps.org/doi/10.1103/PhysRevLett.91.067202
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11368/2939664
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