Enhanced Shot Noise in Tunneling through a Stack of Coupled Quantum Dots
P. Barthold, F. Hohls, N. Maire, K. Pierz, R. J. Haug
Abstract
We have investigated the noise properties of the tunneling current through vertically coupled self-assembled InAs quantum dots. We observe super-Poissonian shot noise at low temperatures. For increased temperature this effect is suppressed. The super-Poissonian noise is explained by capacitive coupling between different stacks of quantum dots.
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