1f Noise-An "Infrared" Phenomenon
Abstract
The current carried by a beam of electrons which have been scattered from an arbitrary potential is shown to exhibit fluctuations with a 1f spectrum up to f=0. The exponent of f is smaller than unity by an amount determined by infrared radiative corrections. This amount is essentially the fine-structure constant α and practically coincides with the 1f noise coefficient for one carrier. Similar noise is expected from current carriers in any medium.
- Publication:
-
Physical Review Letters
- Pub Date:
- June 1975
- DOI:
- 10.1103/PhysRevLett.34.1492
- Bibcode:
- 1975PhRvL..34.1492H