Dresden 2020 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 64: Poster II

HL 64.26: Poster

Thursday, March 19, 2020, 10:00–13:00, P1A

Spin noise spectroscopy in single InGaAs quantum dots — •Kai Hühn, Julia Wiegand, Jens Huebner, and Michael Oestreich — Inst. for Solid State Physics, Leibniz University Hannover, Appelstraße 2, 30167 Hannover, Germany

In this work we present Spin noise spectroscopy measurements of single Quantum Dots in high magnetic fields reaching from 300mT to 1.4 T. Some theory for the magnetic field dependence of the heavy-hole spin lifetime has been formulated. Additionally the Zeeman splitting and the diamagnetic shift has been investigated to determine Trion g-factor of 1.25. A new fit model has been established, which connects the spin noise power with the spin noise width. This enabled a new way of extrapolating the intrinsic lifetime of an Lorentzian shaped inhomogenius broadened quantum dot.