Advances in the physics of high-temperature superconductivity

The high-temperature copper oxide superconductors are of fundamental and en during interest. They not only manifest superconducting transition temperat ures inconceivable 15 years ago, but also exhibit many other properties app arently incompatible with conventional metal physics. The materials expand our notions of what is possible, and compel us to develop new experimental techniques and theoretical concepts, This article provides a perspective on recent developments and their implications for our understanding of intera cting electrons in metals.