Abstract
Recent STM experiments on observed sharp bound states associated with Zn and Ni impurities, as previously predicted theoretically. Here we extend the theory to the case of a finite concentration of impurities. Using the nonlocal coherent potential approximation, we show that the resonance peak both broadens and shifts as a function of impurity concentration.
- Received 14 March 2002
DOI:https://doi.org/10.1103/PhysRevLett.89.287002
©2002 American Physical Society