Solid State and Optics Seminar

Wednesday, May 18, 2005

1:00 p.m.

107 Mason Lab

"Measurement of Counting Statistics of Electron Transport
in a Tunnel Junction"

Prof. Michael Reznikov
Dept. of Physics, Technion, Israel Institute of Technology

Abstract

We present measurements of the time-dependent fluctuations in electrical current in a voltage-biased tunnel junction. We were able to simultaneously extract the first three moments of the tunnel current counting statistics. Detailed comparison of the second and the third moment reveals that counting statistics is accurately described by the Poissonian distribution expected for spontaneous current fluctuations due to electron charge discreteness, realized in tunneling transport at negligible coupling to environment..

Host: Dan Prober