We consider the optical Hall conductivity of a general electronic medium and prove that the optical Hall angle obeys a new sum rule. This sum rule governs the response of an electronic fluid to a Lorentz force and can be thought of as a counterpart to the f-sum rule in optical conductivity. The physical meaning of this sum rule is discussed, giving a number of examples of its application to a variety of electronic media.
|Original language||English (US)|
|Number of pages||4|
|Journal||Physical review letters|
|State||Published - Feb 24 1997|
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)