1. Department of Materials Science and Engineering, Rutgers University, 607 Taylor Road, Piscataway, New Jersey 08854, United States
2. Center for Quantum Science and Technology under Extreme Conditions, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan
3. Department of Materials, Imperial College London, Exhibition Road, London SW7 2AZ, U.K.
4. WPI Advanced Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
5. Department of Materials Science and Engineering, University of Texas at Dallas, Richardson, Texas 75080, United States