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Article Dans Une Revue Applied Physics Letters Année : 2016

State hybridization shapes the photocurrent in triple quantum dot nanojunctions

Résumé

We investigated a prototype of a quantum dot based photodetector made of a dot absorber interconnected with two lateral dot filters in contact with semiconducting leads. Using the nonequilibrium Green's function technique, we found that there are two opposite evolutions of the photocurrent in the vicinity of the tunnel resonance for such a kind of nanodevice. This evolution depends on where the strongest hybridization of states happens, and hence still reveals a quantum effect. If the filter states hybridize more with the absorber states than the ones of the leads, the photocurrent shows a maximum at the tunnel resonance, while it is minimized in the opposite case. Published by AIP Publishing.
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Dates et versions

hal-01434979 , version 1 (13-01-2017)

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Katawoura Beltako, Nicolas Cavassilas, Fabienne Michelini. State hybridization shapes the photocurrent in triple quantum dot nanojunctions. Applied Physics Letters, 2016, 109 (7), ⟨10.1063/1.4961056⟩. ⟨hal-01434979⟩
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