Observing Atomic Collapse Resonances in Artificial Nuclei on Graphene

@article{Wang2013ObservingAC,
title={Observing Atomic Collapse Resonances in Artificial Nuclei on Graphene},
author={Y. Wang and D. Wong and A. Shytov and V. Brar and S. Choi and Q. Wu and H. Tsai and W. Regan and A. Zettl and R. Kawakami and S. Louie and L. Levitov and M. Crommie},
journal={Science},
year={2013},
volume={340},
pages={734 - 737}
}

Creating Unstable Atomic Orbitals A hallmark of atomic Bohr orbitals is that they are stable; that is, time independent. However, for a very highly charged nucleus, the electrons must be described with the relativistic Dirac equation; the motion becomes time dependent, with electrons spiraling into the nucleus and coupling to positrons at large distances from the nucleus. In graphene, charge carriers are mass-less and described by the relativistic Dirac equation, and could also exhibit “atomic… Expand