Author Affiliations

Sangwan Sim,¹ Jun Park,¹ Nikesh Koirala,² Seungmin Lee,¹ Matthew Brahlek,² Jisoo Moon,² Maryam Salehi,³ Jaeseok Kim,¹ Soonyoung Cha,¹ Ji Ho Sung,^4,5 Moon-Ho Jo,^4,5,6 Seongshik Oh,^2,7 and Hyunyong Choi^1,*

¹School of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, Korea

²Department of Physics and Astronomy, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, USA

³Department of Materials Science and Engineering, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, USA

⁴Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Pohang 790-784, Korea

⁵Division of Advanced Materials Science, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Pohang 790-784, Korea

⁶Department of Materials Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Pohang 790-784, Korea

⁷Institute for Advanced Materials, Devices and Nanotechnology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, USA

^*Corresponding author: hyongchoi@yonsei.ac.kr