1. Physics and Chemistry of Materials, Theoretical Division, Los Alamos National Laboratory, Los Alamos 87545, New Mexico, United States
2. Department of Chemistry, University of California, Irvine 92697, California, United States
3. Department of Industrial Chemistry, “T. Montanari”, Università degli Studi di Bologna, Viale del Risorgimento, 4, Bologna 40136, Italy
4. Department of Physics and Astronomy, University of California, Irvine 92697, California, United States
5. Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos 87545, New Mexico, United States