Condensed Matter

CM 07: The Hall Effect

Investigate the Hall effect in various semiconductors. You will first calibrate a magnet using a gaussmeter and commercial Hall probe. You will then measure the Hall voltage of your samples as a function of current and of magnetic field. From your data, you can calculate the sign and concentration of the majority charge carriers in the material.

Optional: investigate the properties of some modern commercial Hall sensors and switches. Use them to design your own projects, such as an intruder alert or conveyer belt counter, or to build your own gaussmeter.