1. Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
2. Department of Physics, Applied Physics, and Astronomy, Rensselaer Polytechnic Institute, Troy, NY 12180, USA
3. Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
4. Computational Sciences and Engineering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
5. Department of Chemistry, University of North Dakota, Grand Forks, ND 58202, USA
6. Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA