The role of bound states in time-dependent quantum transport

E. Khosravi*, S. Kurth, G. Stefanucci, E. K.U. Gross

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

Charge transport through a nanoscale junction coupled to two macroscopic electrodes is investigated for the situation when bound states are present. We provide numerical evidence that bound states give rise to persistent, non-decaying current oscillations in the junction. We also show that the amplitude of these oscillations can exhibit a strong dependence on the history of the applied potential as well as on the initial equilibrium configuration. Our simulations allow for a quantitative investigation of several transient features. We also discuss the existence of different timescales and address their microscopic origin.

Original languageAmerican English
Pages (from-to)355-364
Number of pages10
JournalApplied Physics A: Materials Science and Processing
Volume93
Issue number2
DOIs
StatePublished - Nov 2008
Externally publishedYes

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