Noise at a Fermi-edge singularity
N. Maire, F. Hohls, T. Luedtke, K. Pierz, R. J. Haug
Abstract
We present noise measurements of self-assembled InAs quantum dots at high magnetic fields. In comparison to I-V characteristics at zero magnetic field we notice a strong current overshoot which is due to a Fermi-edge singularity. We observe an enhanced suppression in the shot noise power simultaneous to the current overshoot which is attributed to the electron-electron interaction in the Fermi-edge singularity.
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