Klaus von Klitzing discovered integral changes in resistance in a MOSFET, which is the "quantum" form of this and it can be used to show that electrons serve as charge carriers.
This effect is exhibited in an oscillatory pattern in the Shubnikov de Haas effect, and its magnitude can be measured by connecting symmetrical contacts in the van der Pauw method. A secondary current can be induced in a circular metal disk in one variant for it named for Corbino. Klaus von Klitzing discovered integral changes in resistance in a MOSFET, which is the "quantum" form of this and it can be used to show that electrons serve as charge carriers. For 10 points, name this effect wherein a magnetic field applied perpendicularly to the flow of a current results in a potential difference in a transverse direction, named for its American discoverer.
This effect is exhibited in an oscillatory pattern in the Shubnikov de Haas effect, and its magnitude can be measured by connecting symmetrical contacts in the van der Pauw method.
{Hall} effect [accept {Quantum Hall}]