Theoretical ideas and experimental results concerning high-temperature superconductors
are reviewed. Special emphasis is given to calculations performed with the help of …

We consider the nanoscale electronic phase separation in a wide class of different
materials, mostly in strongly correlated electron systems. The phase separation turns out to …

A model of copper-oxygen bonding and antibonding bands with the most general two-body
interactions allowable by symmetry is considered. The model has a continuous transition as …

There is a strong tendency for dilute holes in an antiferromagnet to phase separate.(This is a
generic feature of do** into a commensurate correlated insulating state.) We review the …

We analyze the dynamic scattering amplitude between quasiparticles at the Fermi surface in
the proximity of a charge instability, which may occur in the high temperature …

The phase diagram for a general model for cuprates is derived in a mean-field
approximation. A phase-violating time reversal without breaking translational symmetry is …

The Van Hove singularity (VHS) provides a paradigm for the study of the role of peaks in the
density of states (dos) on electronic properties. More importantly, it appears to play a major …

Starting with the three-band extended Hubbard model (or dp model) widely used to
represent the CuO 2 planes in the high-T c cuprates, we make a systematic reduction to an …

A scenario is presented, in which the presence of a quantum critical point due to formation of
incommensurate charge density waves accounts for the basic features of the high …

In the last few years, charge density waves (CDWs) have been ubiquitously observed in
high-temperature superconducting cuprates and are now the most investigated among the …