Ordered phases of XXZ-symmetric spin-1/2 zigzag ladder

Details Ordered phases of XXZ-symmetric spin-1/2 zigzag ladder Ordered phases of XXZ-symmetric spin-1/2 zigzag ladder

2003-10-31

arxiv.org/abs/cond-mat/0310764v1

Physics

Condensed Matter

Strongly Correlated Electrons

14 pages, 3 figures. submitted to The European Physical Journal B

Scientific paper

10.1140/epjb/e2004-00180-3

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.

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