Baek, Ji-Hwan; Kim, Hyoung Gyun; Lim, Soo Yeon; Hong, Seong Chul; Chang, Yunyeong; Ryu, Huije; Jung, Yeonjoon; Jang, Hajung; Kim, Jungcheol; Zhang, Yichao; Watanabe, Kenji; Taniguchi, Takashi; Huang, Pinshane Y.; Cheong, Hyeonsik; Kim, Miyoung; Lee, Gwan-Hyoung
Nature Materials, Vol.22 No.12, pp.1463-1469