1. Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
2. Department of Physics, University of Houston, Houston, Texas 77204, United States
3. Department of Physics and Astronomy, University of Louisville, Louisville, Kentucky 40292, United States
4. State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and InformationTechnology, Chinese Academy of Sciences, Shanghai 200050, China
5. Texas Center for Superconductivity, University of Houston, Houston Texas 77204, United States