1. Department of Mechanical Engineering, Columbia University, New York, New York 10027, United States
2. Department of Materials Science and Engineering, University of Wisconsin−Madison, Madison, Wisconsin 53706, United States
3. Department of Physics, Columbia University, New York, New York 10027, United States
4. Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02142, United States
5. Department of Materials Science and Engineering, Texas A&M University, College Station, Texas 77840, United States
6. Department of Physics and National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32306, United States
7. National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
8. Department of Applied Physics and Applied Mathematics, Columbia University, New York, New York 10027, United States