1. Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, United States
2. Carlson School of Chemistry and Biochemistry, Clark University, Worcester, Massachusetts 01610, United States
3. Department of Physics, Clark University, Worcester, Massachusetts 01610, United States
4. Department of Civil and Environmental Engineering, Institute of Materials Science, The George Washington University, Washington, D.C. 20052, United States
5. National High Magnetic Field Laboratory, Tallahassee, Florida 32310, United States
6. Department of Physics, University of Tennessee, Knoxville, Tennessee 37996, United States