Phase Diagram of the 2-Leg Heisenberg Ladder with Alternating Dimerization
arXiv:cond-mat/9810379 · doi:10.1016/S0375-9601(98)00849-4
Abstract
Using the Lanczos method we determine the phase diagram of the 2-leg AF-Heisenberg ladder with alternating dimerization. It consists of a resonating valence bond phase and a dimer phase separated by a critical line. Our results are in good agreement with previous conjectures obtained with the non linear sigma model.
REVTEX file, 10 pages, 3 figures. To appear in PLA