期刊
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
卷 93, 期 2, 页码 355-364出版社
SPRINGER
DOI: 10.1007/s00339-008-4864-9
关键词
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资金
- Deutsche Forschungsgemeinschaft [SFB658]
- EU Network of Excellence NANOQUANTA [NMP4-CT-2004-500198]
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.
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