1. Theoretical Division, Los Alamos National Laboratory, New Mexico 87545, United
States
2. R. Boškovíc Institute, Department of Physical Chemistry, Bijenička
54, 10000 Zagreb, Croatia
3. Center for Nanophase Material
Sciences and Computer Science and Mathematics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee
37831, United States
4. Material
Physics and Application
Division, Los Alamos National Laboratory, New Mexico 87545, United States