title: Spin noise spectroscopy in GaAs.
abstract: We observe the noise spectrum of electron spins in bulk GaAs by Faraday-rotation noise spectroscopy. The experimental technique enables the undisturbed measurement of the electron-spin dynamics in semiconductors. We measure exemplarily the electron-spin relaxation time and the electron Landé g factor in -doped GaAs at low temperatures and find good agreement of the measured noise spectrum with a theory based on Poisson distribution probability.
authors.affiliation: Institut für Festkörperphysik, Universität Hannover, Appelstrasse 2, D-30167 Hannover, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Oestreich
authors.forename: M
authors.initials: M
authors.lastname: Römer
authors.forename: R J
authors.initials: RJ
authors.lastname: Haug
authors.forename: D
authors.initials: D
authors.lastname: Hägele