Laser cooling allows one to slow atoms to roughly the speed of a mosquito and to control their motions with unprecedented precision. This elegant technique, whereby atoms, molecules, and even microscopic beads of glass, can be trapped in small regions of free space by beams of light and subsequently moved at will using other beams, has revolutionized many areas of physics. In particular, it provides a useful research tool for the study of individual atoms, for investigating the details of chemical reactions, and even for the study of atomic motion in the quantum domain. This text begins with a review of the relevant aspects of quantum mechanics; it then turns to the electromagnetic interactions involved in slowing and trapping atoms, in both magnetic and optical traps. The concluding chapters discuss a broad range of applications, including atomic clocks, studies of ultra-cold collision processes, diffraction and interference of atomic beams, optical lattices, and Bose-Einstein condensation. The book is intended for advanced undergraduates and beginning graduate students who have some basic knowledge of optics and quantum mechanics. An extensive bibliography provides access to the current research literature.

One of the most exciting developments in modern physics has been the discovery of the new class of oxide materials with high superconducting transition temperature. Systems with Tc well above liquid nitrogen temperature are already a reality and higher Tc's are anticipated. Indeed, the idea of a room-temperature superconductor, which just a short time ago was considered science fiction, appears to be a distinctly possible outcome of materials research. To address the need to train students and scientists for research in this exciting field, Jeffrey W. Lynn and colleagues at the University of Maryland, College Park, as well as other superconductivity experts from around the U.S., taught a graduate-level course in the fall of 1987, from which the chapters in this book were drawn. Subjects included are: Survey of superconductivity (J. Lynn).- The theory of type-II superconductivity (D. Belitz).- The Josephson effect (P. Ferrell).- Crystallography (A. Santoro).- Electronic structure (C.P. Wang).- Magnetic properties and interactions (J. Lynn).- Synthesis and diamagnetic properties (R. Shelton).- Electron pairing (P. Allen).- Superconducting devices (F. Bedard).- Superconducting properties (J. Crow, N.-P. Ong).