1. Center for Integrated Nanotechnologies, Los Alamos National Laboratory, P.O. Box 1663, K771
Los Alamos, New Mexico 87545, United States
2. Department of Electrical and
Computer Engineering, University of California, San Diego, La Jolla, California 92093, United States
3. Department of Materials Science, University of California, Los Angeles, Engineering
V Building, Los Angeles, California 90095, United States
4. Department of Materials Science, University of Milano-Bicocca, Milano, Italy
5. Department of Physics, Simon Fraser University, 8888 University Dr., Burnaby,
BC, V5A 1S6 Canada
6. School of Physics
and Technology, Center
for Electron Microscopy and MOE Key Laboratory of Artificial Micro-
and Nano-structures, Wuhan University,
Wuhan 430072, China
7. Physical
Chemistry and Applied
Spectroscopy, Los Alamos National Laboratory, P.O. Box 1663, K771 Los Alamos, New Mexico 87545, United States
8. Material Science and Technology
Division, Los Alamos National Laboratory, P.O. Box 1663, K771, Los Alamos, New Mexico 87545, United States
9. Mechanical Engineering
and Design Department, Aston University, Birmingham B4 7ET, United Kingdom
10. Center for Integrated Nanotechnologies, Sandia National Laboratories, MS 1303, Albuquerque,
New Mexico 87185, United States