Schottky noise

Schottky noise, also known as shot noise, is a type of electrical fluctuation that occurs when discrete charge carriers, like electrons, randomly pass through a point in a circuit, such as a detector or amplifier. Because electrons are individual particles, their arrivals are not perfectly regular but happen in random bursts, creating tiny, unpredictable voltage variations. This noise sets a fundamental limit on the sensitivity of electronic devices, especially those involved in detecting weak signals. Essentially, Schottky noise reflects the natural, quantum-level randomness in the flow of charge carriers.