What a giant Bardeen was! Two Nobel prizes in physics. First for co-inventing the transistor at Bell Labs and the second 16 years later for being one of the creators of the theory explaining superconductivity. And yet most Americans have no idea who he is/was.
Oh sure, won it twice, but never unshared, so, what a loser. /sarc
It's a little odd that no one else has ever won a second one, but of course, there are more scientists in each succeeding generation, and it used to seem unlikely to be any more Nobels in Physics that are unshared, the last time was in 1992, whichi is a while ago already.
The unshared ones have tended to be awarded near the ends of lives or ends of careers, a sort of lifetime achievement award.