The constant characterizing the process underlying this effect can then be written as one over the quantity fundamental charge times sheet density times sheet resistance - that quantity is the constant of proportionality between the charge drift velocity and applied electric field and is known as the mobility.
The magnitude of this effect and the sheet resistivity can be measured simultaneously in the four-contact van der Pauw method. The constant characterizing the process underlying this effect can then be written as one over the quantity fundamental charge times sheet density times sheet resistance - that quantity is the constant of proportionality between the charge drift velocity and applied electric field and is known as the mobility. This effect can be explained by considering the Lorentz force on a drifting charge carrier, so its sign determines the majority carrier in semiconductors. The magnitude of this effect scales with applied magnetic field, so it can be used to make sensitive magnetometers. For 10 points, name this electromagnetic effect, the creation of a voltage gradient perpendicular to an applied current in a magnetized material.
The magnitude of this effect and the sheet resistivity can be measured simultaneously in the four-contact van der Pauw method.
the {Hall} effect