Abstract
We present an exact diagonalization study of the ground state of the spin-half model. Dimer correlation functions and the susceptibility associated to the breaking of the translational invariance are calculated for the and the clusters. These results—especially when compared to the one-dimensional case, where the occurrence of a dimerized phase for large enough frustration is well established—suggest either a homogeneous spin liquid or, possibly, a dimerized state with a rather small order parameter.
- Received 18 October 2002
DOI:https://doi.org/10.1103/PhysRevB.67.212402
©2003 American Physical Society