Abstract
We investigate a model of a frustrated spin- 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- chain might be a good candidate to observe such a phase.
- Received 9 September 2002
DOI:https://doi.org/10.1103/PhysRevLett.91.067202
©2003 American Physical Society