Search for quantum dimer phases and transitions in a frustrated spin ladder

Physical Review B - Condensed Matter and Materials Physics

Volumn 73, Issue 22, 2006, Pages

  Hung, Hsiang Hsuan ^a   Gong, Chang De ^a,b   Chen, Yung Chung ^c   Yang, Min Fong ^c  

^a NANJING UNIVERSITY   (China)

^b CCAST WORLD LABORATORY   (China)

^c TUNGHAI UNIVERSITY   (Taiwan)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 33745436957     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.73.224433     Document Type: Article

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37. It is known that these string order parameters are not sufficient to characterize uniquely the RS and the DC phases, because both phases have even topological quantum number (i.e., Oodd =0 but Oeven ≠0) (Ref.). However, since the possibility of the DC phase is ruled out by our results in Figs. 1 2, the only possible phase with even topological quantum number is just the RS phase. One then can use string order parameters to locate the regions of the Haldane and the RS phases.
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