Long-range interactions mediated by screening in a 2D electron gaz:
Tracing Co monomer diffusion on Ag(111) with STM.
Substrate temperature: T = 18.5 K
Time between subsequent frames: t = 26 s
Coverage: θ = 4·10-4 ML
Tunneling parameters:
V t = -199 mV
I t = -0.99 nA