Engineering single-atom dynamics with electron irradiation
Author(s)Su, Cong; Tripathi, Mukesh; Yan, Qing-Bo; Wang, Zegao; Zhang, Zihan; Hofer, Christoph; Wang, Haozhe; Basile, Leonardo; Su, Gang; Dong, Mingdong; Meyer, Jannik C.; Kotakoski, Jani; Kong, Jing; Idrobo, Juan-Carlos; Susi, Toma; Li, Ju; ... Show more Show less
MetadataShow full item record
Atomic engineering is envisioned to involve selectively inducing the desired dynamics of single atoms and combining these steps for larger-scale assemblies. Here, we focus on the first part by surveying the single-step dynamics of graphene dopants, primarily phosphorus, caused by electron irradiation both in experiment and simulation, and develop a theory for describing the probabilities of competing configurational outcomes depending on the postcollision momentum vector of the primary knock-on atom. The predicted branching ratio of configurational transformations agrees well with our atomically resolved experiments. This suggests a way for biasing the dynamics toward desired outcomes, paving the road for designing and further upscaling atomic engineering using electron irradiation.
DepartmentMassachusetts Institute of Technology. Department of Nuclear Science and Engineering; Massachusetts Institute of Technology. Department of Materials Science and Engineering; Massachusetts Institute of Technology. Research Laboratory of Electronics; Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
American Association for the Advancement of Science (AAAS)
Cong, Su et al. "Engineering single-atom dynamics with electron irradiation." Applied Physics 5, 5 (May 2019): eaav2252 © 2019 The Authors
Final published version