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Instituto de Ciencia de Materiales de Madrid |
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| Condensed Matter Theory | |||||
| Sigmund Kohler | home | cv | research | publications | ||||
Electron bunching in triple quantum dot interferometersFernando Domínguez, Gloria Platero, and Sigmund KohlerChem. Phys. 375, 284 (2010) We study electron transport through a triple quantum dot in ring or interferometer configuration. In particular, we analyze the influence of a gate voltage that detunes one of the dots, such that it becomes offresonant. In this regime, interference effects fade away, i.e., the current becomes independent of a penetrating flux. Despite the absence of interference effects, the off-resonant dot causes intriguing noise properties which we characterize by the full-counting statistics of the transported electrons. It turns out that the detuning causes strong electron bunching. Analytical results for limiting cases support this picture. A possible application is the construction of current sources with widely tunable noise properties. arXiv:1002.3252 [cond-mat] |
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last modified: 18.11.2024 by
Sigmund Kohler