Single-atom transistor discovered

This is remarkable, but these kind of things are only possible at extremely low temperatures and in high magnetic fields, for example this was done at 100mK and in a 4T field, so you won't be seeing intel pumping these out any time soon.

I suspect this transistor suffers from the same problem as all other 'miracle' transistors, including carbon nanotube based transistors, that have been announced over the past decade: the gain < 1, which means you can't build anything other than the most simple circuits out of them.

Is it "discovered" or "created"?

First steps towards quantum computers...!

Amazing!