Multi-mode transport through a quantum nanowire with two embedded dots

Details Multi-mode transport through a quantum nanowire with two embedded dots Multi-mode transport through a quantum nanowire with two embedded dots

2004-11-15

arxiv.org/abs/cond-mat/0411378v1

European Physical Journal B 45, 339 (2005)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

RevTeX, 7 pages with included postscript figures

Scientific paper

10.1140/epjb/e2005-00191-6

We investigate the conductance of a quantum wire with two embedded quantum dots using a T-matrix approach based on the Lippmann-Schwinger formalism. The quantum dots are represented by a quantum well with Gaussian shape and the wire is two-dimensional with parabolic confinement in the transverse direction. In a broad wire the transport can assume a strong nonadiabatic character and the conductance manifests effects caused by intertwined inter- and intra-dot processes that are identified by analysis of the ``nearfield'' probability distribution of the transported electrons.

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