1. Department
of Physics, Applied
Physics, and Astronomy, Rensselaer Polytechnic Institute, Troy, 12180 New York, United States
2. Center for Nanophase Materials Science and Computer Science & Mathematics Division, Oak Ridge National Laboratory, Oak Ridge, 37831 Tennessee, United States
3. Department
of Materials Science
and Engineering, Rensselaer Polytechnic Institute, Troy, 12180 New York, United States