1. Contribution from the Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, Electrical and Computer Engineering and Materials Science and Mechanics, Michigan State University, East Lansing, Michigan 48824, Materials and Engineering Physics Program, 221 Metals Development, Ames LaboratoryIowa State University, Jet Propulsion Laboratory/California Institute of Technology, 4800 Oak Grove Drive, Pasadena,...