Author Affiliations

Ji-Hun Kang,^1,* Sheng Wang,^2,3 and Feng Wang^2,3,4

¹Department of Physic and Astronomy, Seoul National University, Seoul 08826, Republic of Korea

²Department of Physics, University of California at Berkeley, Berkeley, CA 94720, USA

³Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA

⁴Kavli Energy NanoSciences Institute at the University of California, Berkeley and the Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA

^*Corresponding author: jihun.kang@snu.ac.kr