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Article Dans Une Revue Physical Review Letters Année : 2003

Tetramerization of a frustrated spin-1/2 chain

Résumé

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 tetramerised phase with three different bond lengths is found. We argue that the zig-zag spin-1/2 chain LiV$_2$O$_5$ might be a good candidate to observe such a phase.

Dates et versions

hal-00131600 , version 1 (16-02-2007)

Identifiants

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Federico Becca, Frederic Mila, Didier Poilblanc. Tetramerization of a frustrated spin-1/2 chain. Physical Review Letters, 2003, 91 (6), pp.067202. ⟨10.1103/PhysRevLett.91.067202⟩. ⟨hal-00131600⟩
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