Understanding High Tc Superconductivity

Details Understanding High Tc Superconductivity Understanding High Tc Superconductivity

2003-04-11

arxiv.org/abs/cond-mat/0304261v2

Proceedings of the International Symposium on Frontiers of Science, World Scientific, 2003

Physics

Condensed Matter

Strongly Correlated Electrons

15 pages, 3 eps figures, references updated; invited talk at the International Symposium on Frontiers of Science in celebratio

Scientific paper

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 antiferromagnetic (AF) phase, a superconducting state, and a pseudogap phase at low doping and low temperature, consistent with the experimental one. The dual topological gauge structure of this model is responsible for unifying these phases within a single framework with correct doping and temperature scales. Some unique predictions in such a model are also discussed.

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