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arXiv · 0902.3622

Effect of Klein tunneling on conductance and shot noise in ballistic graphene

E. B. Sonin
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Abstract

The conductance and the Fano factor in a graphene sheet in the ballistic regime are calculated. The electrostatic potential in the sheet is modeled by a trapezoid barrier, which allows to use the exact solution of the Dirac equation in a uniform electric field in the slope areas (the two lateral sides of the trapezoid). A special attention is devoted to asymmetry with respect to the sign of the gate voltage, which is connected with the difference between the Klein tunneling and the over-barrier reflection. The comparison of the developed theory with the experiment supports the conclusion that the Klein tunneling was revealed experimentally.

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E. B. Sonin. 2009-02-24. Effect of Klein tunneling on conductance and shot noise in ballistic graphene. https://doi.org/10.1103/physrevb.79.195438

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