Affiliation: | Center for Spintronics, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea;Department of Physics, Chung-Ang University, Seoul 06974, Republic of Korea;Department of Emerging Materials Science, Daegu Gyeongbuk Institute of Science & Technology, Daegu 42988, Republic of Korea;Department of Physics, Soongsil University, Seoul 06978, Republic of Korea |