Herb A. Mook, Jr.
Solid State Division
For neutron scattering studies of condensed matter physics, particularly investigations of transition metal magnetism and quantum fluids, and for the development of novel scattering techniques.
Dr. Mook received his B.A. degree from Williams College in 1960 and his M.S. and Ph.D.
degrees in physics in 1961 and 1965 from Harvard University. He joined the Solid State
Division staff at ORNL in 1965.
Throughout his career at ORNL, Dr. Mook has conducted neutron scattering research on a broad spectrum of topics. He is best known for his pioneering research on the magnetic excitations of transition-metal ferromagnets and the observation of itinerant electron effects in these materials. He has had a longstanding interest in quantum fluids and is well known for his experiments establishing the presence of Bose Einstein condensation in 4He. Dr. Mook was the first to establish the coexistence of superconductivity and magnetism in the rare-earth rhodium borides, for which he received the U.S. Department of Energy's 1982 Award for Outstanding Scientific Accomplishments in Solid State Physics.
His present research activities are mostly
concerned with neutron studies of high-temperature superconducting materials. He and his
collaborators were the first to observe the vortex lattice in the high-Tc
materials by neutron scattering and the first to directly observe vortex lattice melting.
He has also used neutrons to probe the interaction between superconductivity and magnetism
and to directly observe the opening of a superconducting gap in the spin excitation
spectra. He has given 23 invited talks at international conferences on superconductivity
He is the author of about 200 professional journal articles and book chapters and has been a fellow of the American Physical Society since 1979. He has served as the chairman of several conferences, including the International Conference on Neutron Scattering held in Toronto in 1997. He is head of the Neutron Scattering Group in the Solid State Division and has served as the scientific coordinator for the Spallation Neutron Source Project.
Dr. Mook has also been interested in the discovery of new neutron scattering techniques and instrumentation. He received R&D 100 awards in 1984 and 1989 for his innovations in neutron spectrometry and holds three patents for neutron instrumentation.
He was appointed a corporate fellow in 1987 and senior corporate fellow in 1995.