1. Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, United States
2. Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854, United States
3. Laboratory for Pohang Emergent Materials and Department of Physics, Pohang University of Science and Technology, Pohang 790-784, Korea
4. Condensed Matter Physics, University of Oxford, The Clarendon Laboratory, Parks Road, Oxford OX1 3PU, United Kingdom
5. National High Magnetic Field Laboratory, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
6. National High Magnetic Field Laboratory, Tallahassee, Florida 32310, United States
7. Department of Physics, University of Tennessee, Knoxville, Tennessee 37996, United States