Ordered phases of XXZ-symmetric spin-1/2 zigzag ladder
arXiv:cond-mat/0310764 · doi:10.1140/epjb/e2004-00180-3
Abstract
Using bosonization approach, we derive an effective low-energy theory for XXZ-symmetric spin-1/2 zigzag ladders and discuss its phase diagram by a variational approach. A spin nematic phase emerges in a wide part of the phase diagram, either critical or massive. Possible crossovers between the spontaneously dimerized and spin nematic phases are discussed, and the topological excitations in all phases identified.
14 pages, 3 figures. submitted to The European Physical Journal B