1. Argonne
Leadership Computing Facility, Argonne National Laboratory, Argonne, Illinois 60439, United States
2. HEDP
Theory Department, Sandia National Laboratories, Albuquerque, New Mexico 87185, United States
3. Materials
Science and Technology Division and Computer Science and Mathematics
Division, Oak Ridge National Laboratory, Oak Ridge, Tenessee 37831, United States
4. Institute
of Physical Chemistry, Department of Chemistry, University of Basel, Klingelbergstrasse 80, CH-4056 Basel, Switzerland