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Spatiotemporal Spin Noise Spectroscopy

Steeve Cronenberger 1, 2 Chahine Abbas 1, 2 Denis Scalbert 1, 2, * H. Boukari 3 
* Corresponding author
2 OECS - Optique des états collectifs et du spin
L2C - Laboratoire Charles Coulomb
Abstract : We report on the potential of a new spin noise spectroscopy approach by demonstrating all-optical probing of spatiotemporal spin fluctuations. This is achieved by homodyne mixing of a spatially phase-modulated local oscillator with spin-flip scattered light, from which the frequency and wave vector dependence of the spin noise power is unveiled. As a first application of the method we measure the spatiotemporal spin noise in weakly n-doped CdTe layers, from which the electron spin diffusion constant and spin relaxation rates are determined. The absence of spatial spin correlations is also shown for this particular system.
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Submitted on : Tuesday, July 23, 2019 - 5:45:13 PM
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Steeve Cronenberger, Chahine Abbas, Denis Scalbert, H. Boukari. Spatiotemporal Spin Noise Spectroscopy. Physical Review Letters, American Physical Society, 2019, 123 (1), pp.017401. ⟨10.1103/PhysRevLett.123.017401⟩. ⟨hal-02192421⟩



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