1. Department of Materials Science and Engineering, University of Florida, Gainesville, Florida 32611, United States
2. Department of Physics, The Pennsylvania State University- Behrend, Erie, Pennsylvania 16563, United States
3. Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37212, United States
4. Department of Electrical and Computer Engineering, University of Florida, Gainesville, Florida 32611, United States
5. Department of Electrical and Computer Engineering, Vanderbilt University, Nashville, Tennessee 37212, United States
6. Advanced Materials Sciences, Sandia National Laboratories, Albuquerque, New Mexico 87158, United States