Arthur Freeman Charles E. and Emma H. Morrison Professor PhD, Massachusetts Institute of Technology, 1956 Guggenheim Fellow Fulbright Fellow Alexander von Humboldt Fellow Fellow, American Association for the Advancement of Science Winner, International Medal of the Materials Research Society Winner, Magnetism Award of the International Union of Pure and Applied Research Editor, Journal of Magnetism and Magnetic Materials Professor Freeman's research interests lie in developing computational methods and programs for carrying out first-principles modeling/simulations of complex materials and phenomena.  A pioneer in computational physics and computational materials science, his first-principles approaches (i.e., without adjustable parameters) based on the local density approximation, have provided a universal method for treating all materials.  Applications of his FLAPW method are focused on the structural, electronic, magnetic, optical and mechanical properties of metals, semiconductors, insulators, large molecular clusters, complex bulk compounds and alloys, low-dimensional systems (surfaces, thin films and multilayers) and defects (impurities, vacancies, faults, grain boundaries and dislocations).  Very recently he and his colleagues have parallelized the FLAPW code on the Cray T3E and the IBM SP4 computers and have demonstrated very good scaling with up to 512 processors.  Freeman is the 13th most cited physicist in the ISI listing of over 512,000 physicists worldwide. Selected Publications M. S. Park, S. H. Rhim, and A. J. Freeman AJ Charge Compensation and Mixed Valency in LaAlO3/SrTiO3 Heterointerfaces Studied by the FLAPW Method Physical Review B74, 205416 (2006) S. E. Koh, B. Delley, J. E. Medvedeva, et al. Quantum Chemical Analysis of Electronic Structure and n- and p-Type Charge Transport in Perfluoroarene-Modified Oligothiophene Semiconductors J. Phys. Chem. B110, 24361 (2006) N. I. Medvedeva, Y. N. Gornostyrev, and A. J. Freeman Electronic Origin of Solid Solution Softening in bcc Molybdenum Alloys Physical Review Letters 94, 136402 (2005) J. E. Medvedeva, A. J. Freeman, X. Y. Cui, et al. Half-Metallicity and Efficient Spin Injection in AlN/GaN : Cr(0001) Heterostructure Physical Review Letters 94, 146602 (2005)