Tetramerisation of a frustrated spin-1/2 chain

Details Tetramerisation of a frustrated spin-1/2 chain Tetramerisation of a frustrated spin-1/2 chain

2002-09-12

arxiv.org/abs/cond-mat/0209278v1

Physical Review Letters 91, 067202 (2003)

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

10.1103/PhysRevLett.91.067202

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.

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