Author Affiliations

Sui Yang,^1,2,3,* Xingjie Ni,¹ Xiaobo Yin,¹ Boubacar Kante,¹ Yuan Wang,¹ and Xiang Zhang^1,2,3

¹NSF Nano-scale Science and Engineering Center (NSEC), 3112 Etcheverry Hall, University of California at Berkeley, Berkeley, California 94720, USA.

²Applied Science and Technology, college of engineering, University of California at Berkeley, Berkeley, California, United States

³Materials Sciences Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, USA

^*Corresponding author: suiyang@berkeley.edu