Author(s): Peng Zhang, J.-Z. Ma, Y. Ishida, L.-X. Zhao, Q.-N. Xu, B.-Q. Lv, K. Yaji, G.-F. Chen, H.-M. Weng, X. Dai, Z. Fang, X.-Q. Chen, L. Fu, T. Qian, H. Ding, and S. Shin
Electronic states that only exist on the surface and not in the bulk are predicted for noble metals. These states have now been observed on grey arsenic surfaces through time-resolved ARPES measurements.

[Phys. Rev. Lett. 118, 046802] Published Fri Jan 27, 2017