We develop a new theory of pairing and magnetic effect near the quantum critical point. Several novel properties are predicted: based on a spin fermion model, we derive two new interactions, i) a spin deformational ...

Results obtained with the use of the t–J model of Cu–O planes and Mori’s projection operator formalism are compared with data of neutron scattering experiments in lanthanum and yttrium cuprates. This comparison allows ...

A review of the antiferromagnetic exchange and spin-fluctuation pairing theory in the cuprate superconductors is given. We briefly discuss a phenomenological approach and a theory in the limit of weak Coulomb correlations. ...