Shot noise in resonant tunneling through a zero-dimensional state with a complex energy spectrum

Details Shot noise in resonant tunneling through a zero-dimensional state with a complex energy spectrum Shot noise in resonant tunneling through a zero-dimensional state with a complex energy spectrum

2004-02-13

arxiv.org/abs/cond-mat/0402358v1

Phys. Rev. B 69, 113316 (2004)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures, accepted for Phys. Rev. B

Scientific paper

10.1103/PhysRevB.69.113316

We investigate the noise properties of a GaAs/AlGaAs resonant tunneling structure at bias voltages where the current characteristic is determined by single electron tunneling. We discuss the suppression of the shot noise in the framework of a coupled two-state system. For large bias voltages we observed super-Poissonian shot noise up to values of the Fano factor $\alpha \approx 10$.

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