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  • PACS. 75.10.Jm Quantized spin models - 11.30.-j Symmetry and conservation laws - 75.40.Mg Numerical simulation studies  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Plaquette ground state in the two-dimensional SU(4) spin-orbital model (2000)
    Springer
    The European physical journal 17 (2000), S. 367-370 
    Details
    ISSN: 1434-6036
    Keywords: PACS. 75.10.Jm Quantized spin models - 11.30.-j Symmetry and conservation laws - 75.40.Mg Numerical simulation studies
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract: In order to understand the properties of Mott insulators with strong ground state orbital fluctuations, we study the zero temperature properties of the SU(4) spin-orbital model on a square lattice. Exact diagonalizations of finite clusters suggest that the ground state is disordered with a singlet-multiplet gap and possibly low-lying SU(4) singlets in the gap. An interpretation in terms of plaquette SU(4) singlets is proposed. The implications for LiNiO2 are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00011085
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