Dark channels in resonant tunneling transport through artificial atoms

Details Dark channels in resonant tunneling transport through artificial atoms Dark channels in resonant tunneling transport through artificial atoms

2006-08-11

arxiv.org/abs/cond-mat/0608272v2

J. Chem. Phys. 129, 024703 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures, REVTeX4

Scientific paper

10.1063/1.2949510

We investigate sequential tunneling through a multilevel quantum dot confining multiple electrons, in the regime where several channels are available for transport within the bias window. By analyzing solutions to the master equations of the reduced density matrix, we give general conditions on when the presence of a second transport channel in the bias window quenches transport through the quantum dot. These conditions are in terms of distinct tunneling anisotropies which may aid in explaining the occurrence of negative differential conductance in quantum dots in the nonlinear regime.

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