Bound States in Time-Dependent Quantum Transport: Oscillations and Memory Effects in Current and Density

Details Bound States in Time-Dependent Quantum Transport: Oscillations and Memory Effects in Current and Density Bound States in Time-Dependent Quantum Transport: Oscillations and Memory Effects in Current and Density

2008-03-06

arxiv.org/abs/0803.0914v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures

Scientific paper

The presence of bound states in a nanoscale electronic system attached to two biased, macroscopic electrodes is shown to give rise to persistent, non-decaying, localized current oscillations which can be much larger than the steady part of the current. The amplitude of these oscillations depends on the entire history of the applied potential. The bound-state contribution to the {\em static} density is history-dependent as well. Moreover, the time-dependent formulation leads to a natural definition of the bound-state occupations out of equilibrium.

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