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Scholars Day 2008, Wednesday, April 9

Hall Effect

Before the discovery of the electron by J.J. Thompson, Edwin Hall worked on copper and showed that electric current was carried by negatively charged particles (electrons). His result is referred to as the Hall effect. The Hall effect is instrumental for the semiconductor industry in determining both the polarity and the concentration of carriers of electric current. The effect is a measured voltage created by applying a magnetic field perpendicular to current flow in a conductor due to the Lorentz force on the carriers. We will be measuring Hall voltages with magnetic fields up to Tesla in order to find densities in semiconductors and measure the concentrations on 2 doped silicon samples (p & n types).

Presenter: Steven Haddad (Undergraduate Student)
Topic: Physics
Location: Fireside Lounge, Seymour Union
Time: 9 am (Session I)