RVB description of the low-energy singlets of the spin 1/2 kagome antiferromagnet
In: The European Physical Journal B: Condensed Matter and Complex Systems The European Physical Journal B: Condensed Matter and Complex Systems, Springer-Verlag, 2000, 17, pp.651 HAL Scopus-Elsevier; (2000)
Online
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Zugriff:
{Extensive calculations in the short-range RVB (Resonating valence bond) subspace on both the trimerized and the regular (non-trimerized) Heisenberg model on the kagome lattice show that short-range dimer singlets capture the specific low-energy features of both models. In the trimerized case the singlet spectrum splits into bands in which the average number of dimers lying on one type of bonds is fixed. These results are in good agreement with the mean field solution of an effective model recently introduced. For the regular model one gets a continuous, gapless spectrum, in qualitative agreement with exact diagonalization results.
10 pages, 13 figures, 3 tables. Submitted to EPJB
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RVB description of the low-energy singlets of the spin 1/2 kagome antiferromagnet
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| Autor/in / Beteiligte Person: | Mambrini, Matthieu ; Mila, Frédéric ; Groupe de Physique Théorique (LPQ) ; Laboratoire de Physique Quantique (LPQ) ; Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3) ; Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3) ; Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC) |
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| Quelle: | The European Physical Journal B: Condensed Matter and Complex Systems The European Physical Journal B: Condensed Matter and Complex Systems, Springer-Verlag, 2000, 17, pp.651 HAL Scopus-Elsevier; (2000) |
| Veröffentlichung: | HAL CCSD, 2000 |
| Medientyp: | unknown |
| ISSN: | 1434-6028 (print) ; 1434-6036 (print) |
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