Zx. Zhu et al., Spectral density for the tunneling current zero-frequency shot-noise in a one-dimentional mesoscopic system, ACT PHY C E, 48(2), 1999, pp. 302-313
We have derived the expression of the spectral density for the current shot
-noise in terms of the nonequilibrium Green's functions( closed-path Green'
s functions) for a. one-dimensional mesoscopic junction, and performed nume
rical calculations to discuss the dependence of the zero frequency spectral
density for the currentshot-noise on other variables when the tunnling jun
ction is pure or impure.