# Dr. G. Malcolm Stocks

**Dr. G. Malcolm Stocks** was appointed ORNL Corporate Fellow in 1995. He holds a Ph.D in theoretical physics from the University of Sheffield, UK. He is past Group Leader of the Materials Theory Group, Materials Science and Technology Division at ORNL. He is also past Director of the *“Energy Frontier Center for Defect Physics in Structural Materials*” (Center for Defect Physics – CDP) which was one of the 46 Energy Frontier Research Centers (EFRC) funded by DOE-BES that brought together researchers from ORNL, six Universities, and Ames Laboratory. Areas of scientific expertise include first principles electronic structure theory, the theory of magnetism, alloy theory, strongly correlated electron physics, and the application of parallel algorithms and high performance computers to extend the range of systems and materials complexity to which *ab initio* methods can be applied. He is a major developer of a number of first principles electronic structure methods, most specifically the Korringa-Kohn-Rostoker Coherent-Potential-Approximation (KKR-CPA) approach for calculating the electronic and ground state properties of random substitutional alloys, the linear scaling (order-N) Locally Self-consistent Multiple Scattering (LSMS) method for performing electronic structure calculations on systems comprising many thousands of atoms, as well as constrained local moment approaches for dealing with non-collinear magnetism and spin dynamics in metals and alloys. Past interests include the theory of the finite temperature properties of magnets and the magnetic phase transition, and the theory of experimental probes of the electronic structure of metals and alloys. He is the author of more than 220 peer reviewed journal articles and 130 proceedings and book chapters as well as editor of four books and organizer of numerous international conferences and symposia. He is a fellow of the American Physical Society and has won numerous awards including twice winner of the Gordon Bell Prize applications of high performance computing. His role in EDDE is as a senior advisor to the Director. His contributions to Thrust 1 include fundamental disordered systems theory for electrons and phonons and of the effects of disorder on energy dissipation. He also leads efforts on characterizing the effects of disorder on the energetics of defect formation and migration.