Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2004-03-16
J. Stat. Mech. P08013 (2005)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
new section on probability distribution and new references added
Scientific paper
10.1088/1742-5468/2005/08/P08013
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.
Bulashenko Oleg M.
No associations
LandOfFree
Full counting statistics of a chaotic cavity with asymmetric leads does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Full counting statistics of a chaotic cavity with asymmetric leads, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Full counting statistics of a chaotic cavity with asymmetric leads will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-574003