High‐temperature superconductivity: Four years since Bednorz end Müller

The history, development, theory, experiment and applications of high‐Tc superconducting materials are covered in depth by one of the leading figures in the area. The importance of patents to the inductrial effort is analyzed and the possible mechanisms responsible for the phenomenon described. Copyright © 1990 Verlag GmbH & Co. KGaA, Weinheim