USA im High Tc-Fieber

Understanding High Tc Superconductivity ∗.

I briefly review several key issues in understanding the cuprate superconductors from the point of view of doped-Mott-insulator. Then I present an effective low-energy theory and show that the phase diagram of such a model includes an anti-ferromagnetic (AF) phase, a superconducting state, and a pseudogap phase at low doping and low temperature, consistent with the experimental one. The dual to...

Understanding High Tc Superconductivity ∗.

I briefly review several key issues in understanding the cuprate superconductors from the point of view of doped-Mott-insulator. Then I present an effective low-energy theory and show that the phase diagram of such a model includes an anti-ferromagnetic (AF) phase, a superconducting state, and a pseudogap phase at low doping and low temperature, consistent with the experimental one. The dual to...

Consilience of High-Tc Theories

Improvements both in the quality and in the variety of experiments on high-temperature superconductors have yielded new insights into the microscopic origins of pairing. A number of competing theories have already been ruled out. Some of the more promising descriptions – gauge theories, coupled-chains, nesting instabilities, nodal liquids, and stripes – share features in common. A unified pictu...

Magnetism and high Tc superconductors

The magnetic properties of the copper oxide planes in hight T~ superconductors are represented by a planar 2-d antiferromagnet on a square lattice. We model the magnetic effect of the addition of holes through doping by the replacement of antiferromagnetic with ferromagnetic plaquettes thereby facilitating the creation of vorticeslantivortices. These magnetic

Striping in High Tc Superconductivity