Abstract: | |
In this Letter, the first spin noise spectroscopy measurements in semiconductor systems of reduced effective dimensionality are reported. The nondemolition measurement technique gives access to the otherwise concealed intrinsic, low temperature electron spin relaxation time of n-doped GaAs (110) quantum wells and to the corresponding low temperature anisotropic spin relaxation. The Brownian motion of the electrons within the spin noise probe laser spot becomes manifest in a modification of the spin noise line width. Thereby, the spatially resolved observation of the stochastic spin polarization uniquely allows to study electron dynamics at equilibrium conditions with a vanishing total momentum of the electron system. © 2008 The American Physical Society.
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License of this version: | Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden. |
Publication type: | Article |
Publishing status: | publishedVersion |
Publication date: | 2008 |
Keywords english: | Brownian movement, Dynamics, Electrons, Gallium alloys, Quantum well lasers, Semiconducting gallium, Semiconducting indium, Semiconductor quantum wells, Semiconductor quantum wires, Wells, Brownian motions, Electron dynamics, Electron spins, Electron systems, Equilibrium conditions, Intrinsic spins, Line widths, Low temperatures, N-doped, Nondemolition measurements, Probe lasers, Quantum wells, Semiconductor systems, Spatially resolved, Spin noise spectroscopies, Spin relaxations, Total momentums, Spin dynamics |
DDC: | 530 | Physik |
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