Yes, it's the reverse sear, and proven to be better by SCIENCE
I've seen such steaks (I don't have sous vide myself), and they look like the perfect rare done steak. A nice pink shade throughout, with a beautiful crust.
But, what science?
Experimental results: drool
Experiment status: success.
Materials needed: more steak
Timeline: now
Most likely something from The Food Lab when talking about food and science.