Non-Gaussian fluctuations of mesoscopic persistent currents
arXiv:1006.1831 · doi:10.1103/PhysRevLett.105.136803
Abstract
The persistent current in an ensemble of normal-metal rings shows Gaussian distributed sample-to-sample fluctuations with non-Gaussian corrections, which are precursors of the transition into the Anderson localized regime. We here report a calculation of the leading non-Gaussian correction to the current autocorrelation function, which is of third order in the current. Although the third-order correlation function is small, inversely proportional to the dimensionless conductance of the ring, the mere fact that it is nonzero is remarkable, since it is an odd moment of the current distribution.
4+ pages, 2 figures
References in corpus (2)
Cited by in corpus (6)
- Measurement of the full distribution of the persistent current in normal-metal rings
- Distribution function of persistent current
- Persistent Currents in Normal Metal Rings (Yale PhD thesis)
- Distribution of the transfer matrix in disordered wires
- Fabrication and characterization of large arrays of mesoscopic gold rings on large-aspect-ratio cantilevers
- Semiclassical theory of persistent current fluctuations in ballistic chaotic rings