Hall effect
Efecto Hall
- Date
- 1879 · confidence high
- Place
- Johns Hopkins University, Baltimore, United States
- Credited to
- Edwin Hall
- People
- 👤 Edwin Herbert Hall1855–1938
- Field
- Matter & energy
What was discovered
A magnetic field perpendicular to a current in a conductor generates a transverse voltage. It reveals the sign and density of charge carriers and anticipates the quantum Hall effect.
Discovered before the electron, while Hall was a doctoral student under Rowland.
What it led to
- Characterisation of semiconductors
- Quantum Hall effect (1980)
- Magnetic sensors
- Physics of charge carriers (holes)
Built on
- Maxwell's equations1861-1865
- Electron theory of conduction
Made possible
- Lorentz force1895
- Quantum anomalous Hall effect2013
- Hall sensor
- Solid-state magnetometer