Quantum shot noise in a normal-metal-superconductor point contact
Abstract
The distribution function for the current noise in a normal-metal-superconductor quantum point contact is calculated. It is shown that this distribution describes independent processes when a charge +/-e0 or +/-2e0 passes through the contact. At low temperature and voltage only processes with double-charge transfer are relevant. At zero temperature and low voltage the distribution has a binomial form.
- Publication:
-
Physical Review B
- Pub Date:
- August 1994
- DOI:
- 10.1103/PhysRevB.50.3982
- Bibcode:
- 1994PhRvB..50.3982M
- Keywords:
-
- 72.70.+m;
- 74.80.Fp;
- 74.40.+k;
- Noise processes and phenomena;
- Fluctuations