Three studies in high-Tc cuprates

We investigate three fundamental issues in the physics of high-Tc cuprates, from the perspective of a recently proposed comprehensive theory for these materials. (a) Orbital ordering x superconductivity. The first issue is the detailed microscopic mechanism that produces an attractive interaction between holes in high-Tc cuprates. (b) Dispersion relation x pseudogap order parameter. The second issue refers to the existence of a pseudogap order parameter, which would be different from zero all over the pseudogap phase and would vanish elsewhere. (c) Chemical potential x quantum critical point location. The third issue concerns the debate as to whether the quantum critical point, located where the pseudogap transition line T*(x) meets the T = 0 axis is inside the superconducting dome or at its boundary. We obtain clearcut solutions for the three issues.

Automated summary

In this study, we investigate three fundamental issues in the physics of high-Tc cuprates from the perspective of a recently proposed comprehensive theory. These issues include the microscopic mechanism of the attractive interaction between holes, the relationship between the dispersion relation and the pseudogap order parameter, and the debate regarding the location of the quantum critical point. We obtained clearcut solutions for these three issues.