Full counting statistics of a chaotic cavity with asymmetric leads
| dc.creator | Bulashenko, O. M. | |
| dc.date | 2004-03-16 | |
| dc.date | 2005-09-05 | |
| dc.date.accessioned | 2026-07-25T23:04:33Z | |
| dc.description | We study the statistics of charge transport in a chaotic cavity attached to external reservoirs by two openings of different size which transmit non-equal number of quantum channels. An exact formula for the cumulant generating function has been derived by means of the Keldysh-Green function technique within the circuit theory of mesoscopic transport. The derived formula determines the full counting statistics of charge transport, i.e., the probability distribution and all-order cumulants of current noise. It is found that, for asymmetric cavities, in contrast to other mesoscopic systems, the third-order cumulant changes the sign at high biases. This effect is attributed to the skewness of the distribution of transmission eigenvalues with respect to forward/backward scattering. For a symmetric cavity we find that the third cumulant approaches a voltage-independent constant proportional to the temperature and the number of quantum channels in the leads. | |
| dc.description | new section on probability distribution and new references added | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0403388 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0403388 | |
| dc.identifier | J. Stat. Mech. P08013 (2005) | |
| dc.identifier | doi:10.1088/1742-5468/2005/08/P08013 | |
| dc.identifier.uri | https://dspace.dare.co.zw/handle/123456789/95262 | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | Full counting statistics of a chaotic cavity with asymmetric leads | |
| dc.type | text |