Positive Cross Correlations in a Normal-Conducting Fermionic Beam Splitter

Details Positive Cross Correlations in a Normal-Conducting Fermionic Beam Splitter Positive Cross Correlations in a Normal-Conducting Fermionic Beam Splitter

2005-10-10

arxiv.org/abs/cond-mat/0510240v2

Phys. Rev. Lett. 96, 046804 (2006)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.96.046804

We investigate a beam splitter experiment implemented in a normal conducting fermionic electron gas in the quantum Hall regime. The cross-correlations between the current fluctuations in the two exit leads of the three terminal device are found to be negative, zero or even positive depending on the scattering mechanism within the device. Reversal of the cross-correlations sign occurs due to interaction between different edge-states and does not reflect the statistics of the fermionic particles which `antibunch'.

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