Shot-noise spectroscopy of energy-resolved ballistic currents

Details Shot-noise spectroscopy of energy-resolved ballistic currents Shot-noise spectroscopy of energy-resolved ballistic currents

2003-10-08

arxiv.org/abs/cond-mat/0310184v1

Phys. Rev. B 68, 155321 (2003)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 4 figures

Scientific paper

10.1103/PhysRevB.68.155321

We investigate the shot noise of nonequilibrium carriers injected into a ballistic conductor and interacting via long-range Coulomb forces. Coulomb interactions are shown to act as an energy analyzer of the profile of injected electrons by means of the fluctuations of the potential barrier at the emitter contact. We show that the details in the energy profile can be extracted from shot-noise measurements in the Coulomb interaction regime, but cannot be obtained from time-averaged quantities or shot-noise measurements in the absence of interactions.

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