ZhETF, Vol. 121,
p. 1194 (May 2002)
(English translation - JETP,
Vol. 94, No. 5,
available online at www.springer.com
THE THEORY OF SHOT NOISE IN THE SPACE-CHARGE LIMITED DIFFUSIVE CONDUCTION REGIME
Gurevich V.L., Muradov M.I.
Received: December 18, 2001
PACS: 72.70.+m, 72.10.-d, 74.40.+k
As is well known, fluctuations from a stable stationary nonequilibrium state are described by the linearized inhomogeneous Boltzmann-Langevin equation. The stationary state itself can be described by the nonlinear Boltzmann equation. The ways of its linearization sometimes seem to be not unique. We argue that there is actually a unique way to obtain a linear equation for the fluctuations. As an example, we consider an analytical theory of nonequilibrium shot noise in a diffusive conductor under the space-charge limited regime. Our approach is compared to that in Ref. . We find some difference between the present theory and the approach in  and discuss a possible origin of the difference. We believe that it is related to the fundamentals of the theory of fluctuation phenomena in a nonequilibrium electron gas.