A solution (Dirac electron in crossed, constant electric and magnetic fields) that has found a problem (relativistic quantized Hall effect)
Michael Martin Nieto, Philip L. Taylor
The exactly solvable Dirac electron in crossed, constant electric and magnetic fields represents the relativistic quantized Hall effect. The solution allows one to show that there are no relativistic quantum-mechanical corrections to the ordinary quantized Hall effect.
American Journal of Physics•Mar 1, 1985•14 citations