1. Department of Materials Science and Engineering; National Taiwan University; No.1, Sec. 4, Roosevelt Rd. Taipei 10617 Taiwan
2. Department of Physics; National Taiwan University; No.1, Sec. 4, Roosevelt Rd. Taipei 10617 Taiwan
3. Nano Science and Technology Program; Taiwan International Graduate Program; Academia Sinica and National Taiwan University; No.128, Sec. 2, Academia Rd. Taipei 115 Taiwan
4. Department of Physics; National Sun Yat-sen University; 70 Lienhai Rd. Kaohsiung 80424 Taiwan
5. The International Center for Materials Nanoarchitectonics (MANA); National Institute for Materials Science; 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan
6. Taiwan Consortium of Emergent Crystalline Materials (TCECM); Ministry of Science and Technology; Taipei 106 Taiwan