Abstract
A study of experimental results on the moderately underdoped normal state of the high- T c cuprates and an analytic calculation of Hall effect in them shows that the normal and superconducting states, respectively, correspond to the two- and one-channel Kondo fixed points. The Kondo effect is due to the scattering of doped carriers by the Cu 2+ d-orbitals. Hall constant R H and Hall angle θ H have been calculated for the non-Fermi liquid normal state by using the methods of Green function. Superconductivity has been seen to occur in the Fermi liquid state after the crossover from the two-channel to the one-channel fixed point. The cuprates have been found to have essential parallelism with the heavy fermion compounds.
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