Abstract
Key experimental facts of highT c cuprates have been summarized briefly and the present status of theoretical understanding of these systems viewed as doped Mott insulators is given based on the slave-boson mean-field theory of the extendedt-J model with special emphasis on the spin-gap phenomena. It has been indicated that this spin gap is sensitive to disorder. Various questions including effects of fluctuations around this mean field theory treated as a gauge field are discussed.
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Fukuyama, H., Kohno, H. Theory of highT c cuprates: Extendedt-J model. Czech J Phys 46 (Suppl 6), 3146–3150 (1996). https://doi.org/10.1007/BF02548122
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DOI: https://doi.org/10.1007/BF02548122