Skip to main content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Hall Effect Measurements Sources of Error

Check the following:

  1. Are the probes or wires making good contact to the sample?
  2. Are the contact I-V characteristics linear?
  3. Is any contact much higher in resistance than the others?
  4. Do the voltages reach equilibrium quickly after current reversal (there will be some delay for semi-insulating GaAs)?
  5. Is there visible damage (cracks, especially around the contacts)?
  6. Is the sample in the dark?
  7. Is the sample temperature uniform?
  8. If there are large temperature gradients across the wiring, are dissimilar wiring materials being used?

Contacts

Created April 16, 2010, Updated December 6, 2019