1. Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, United States
2. SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of the Ministry of Education, School of Electronic Science and Engineering, Southeast University, Nanjing, 210096, PR China
3. Department of Materials Science and Engineering, Stony Brook University, Stony Brook, New York 11794, United States
4. Department of Chemistry, Stony Brook University, Stony Brook, New York 11794, United States
5. Photon Science Division, National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States
6. Energy Sciences Directorate, Brookhaven National Laboratory, Upton, New York 11973, United States