1. Center for X-ray Optics, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
2. Department of Emerging Materials Science, DGIST, Daegu 42988, Korea
3. Center for Spin−Orbitronic Materials, Korea University, Seoul 02841, Korea
4. Department of Physics, Chonnam National University, Gwangju 61186, Korea
5. School of Materials Science and Engineering, Ulsan National Institute of Science and Technology, Ulsan 44919, Korea
6. Department of Physics and Astronomy, University of Missouri, Columbia, Missouri 65211, United States
7. Space and Naval Warfare Systems Center Pacific, San Diego, California 92152, United States
8. KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Korea
9. Center for Memory and Recording Research, University of California−San Diego, La Jolla, California 92093, United States
10. Department of Electrical and Computer Engineering, University of California−San Diego, La Jolla, California 92093, United States
11. Department of Materials Science and Engineering, Korea University, Seoul 02841, Korea