Anomalous normal-state properties of high- T c superconductors: intrinsic properties of strongly correlated electron systems?
Thomas Pruschke, M. Jarrell, James K. Freericks
A systematic study of optical and transport properties of the Hubbard model, based on the Metzner-Vollhardt dynamical mean-field approximation, is reviewed. This model shows interesting anomalous properties that are, in our opinion, ubiquitous to single-band strongly correlated systems (for all spatial dimensions greater than one) and also compare qualitatively with many anomalous transport features of the high-T c cuprates. This anomalous behaviour of the normal-state properties is traced to a ‘collective single-band Kondo effect’, in which a quasiparticle resonance forms at the Fermi level as the temperature is lowered, ultimately yielding a strongly renormalized Fermi liquid at zero temperature.
arXiv:supr-con/9502001•Advances In Physics•Jan 1, 1995•441 citations