1. Department
of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
2. Department
of Physics and Astronomy, Rice University, 6100 Main Street, Houston, Texas 77005, United States
3. Quantum
Condensed Matter Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
4. Institute of Chemistry of Tajik Academy of Sciences, 299/2 Ajni Street, Dushanbe 734063, Tajikistan