Since the time of the early studies on mesoscopic devices, it was recognized that, due mainly to the ballistic nature of transport, their resistances and the other electrical quantities could not be combined following the traditional rules of circuit theory. Here, we focus specifically on the conductance and noise resulting from a chain of cascaded mesoscopic cavities and discuss an existing semiclassical model for conductance and shot noise, recasting it into an equivalent circuit description. Numerical simulations show that such a model fails if the cavities are identical and is only partially valid if cavities are unequal. We discuss possible explanations for such a somewhat surprising behaviour. Copyright (C) 2007 John Wiley & Sons, Ltd.

Equivalent resistance and noise of cascaded mesoscopic cavities

MACUCCI, MASSIMO;MARCONCINI, PAOLO;IANNACCONE, GIUSEPPE
2007

Abstract

Since the time of the early studies on mesoscopic devices, it was recognized that, due mainly to the ballistic nature of transport, their resistances and the other electrical quantities could not be combined following the traditional rules of circuit theory. Here, we focus specifically on the conductance and noise resulting from a chain of cascaded mesoscopic cavities and discuss an existing semiclassical model for conductance and shot noise, recasting it into an equivalent circuit description. Numerical simulations show that such a model fails if the cavities are identical and is only partially valid if cavities are unequal. We discuss possible explanations for such a somewhat surprising behaviour. Copyright (C) 2007 John Wiley & Sons, Ltd.
Macucci, Massimo; Marconcini, Paolo; Iannaccone, Giuseppe
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11568/109451
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