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Confinement and deconfinement of spinons in a frustrated spin-1/2 Heisenberg model | | A. M. Tsvelik
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22 Apr 2004 | | Subject: | Strongly Correlated Electrons; Statistical Mechanics | cond-mat.str-el cond-mat.stat-mech | | Abstract: | In this publication I discuss the phase diagram of a frustrated spin-1/2 Heisenberg model suggested in A. A. Nersesyan and A. M. Tsvelik, Phys. Rev. B{f 67}, 024422 (2003). The phase diagram contains $(pi,0)$ and $(pi,pi)$ antiferromagnetic phases separated by the Valence Bond Crystal (VBC) state. I argue that the point of the phase diagram with deconfined spinons, predicted in the aforementioned work, is situated in the middle of VBC state, at the point where the dimerization order parameter changes sign. | | Source: | arXiv, cond-mat/0404541 | | Services: | Forum | Review | PDF | Favorites | |
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