Frequencydependent shot noise in long disordered SNS contacts
Abstract
The shot noise in long diffusive SNS contacts is calculated using the semiclassical approach. At low frequencies and for purely elastic scattering, the voltage dependence of the noise is of the form S_I = (4\Delta + 2eV)/3R. The electronelectron scattering suppresses the noise at small voltages resulting in vanishing noise yet infinite dS_I/dV at V = 0. The distribution function of electrons consists of a series of steps, and the frequency dependence of noise exhibits peculiarities at \omega = neV, \omega = neV  2\Delta, and \omega = 2\Delta  neV for integer n.
 Publication:

arXiv eprints
 Pub Date:
 October 2000
 arXiv:
 arXiv:condmat/0010442
 Bibcode:
 2000cond.mat.10442N
 Keywords:

 Mesoscopic Systems and Quantum Hall Effect;
 Superconductivity
 EPrint:
 4 pages, 4 eps figures