Atomic-like spin noise in solid-state demonstrated with manganese in cadmium telluride

S. Cronenberger, D. Scalbert (), D. Ferrand, H. Boukari and J. Cibert
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S. Cronenberger: Laboratoire Charles Coulomb UMR 5221 CNRS/UM2, Université Montpellier, Place Eugene Bataillon
D. Scalbert: Laboratoire Charles Coulomb UMR 5221 CNRS/UM2, Université Montpellier, Place Eugene Bataillon
D. Ferrand: Université Grenoble Alpes
H. Boukari: Université Grenoble Alpes
J. Cibert: Université Grenoble Alpes

Nature Communications, 2015, vol. 6, issue 1, 1-6

Abstract: Abstract Spin noise spectroscopy is an optical technique which can probe spin resonances non-perturbatively. First applied to atomic vapours, it revealed detailed information about nuclear magnetism and the hyperfine interaction. In solids, this approach has been limited to carriers in semiconductor heterostructures. Here we show that atomic-like spin fluctuations of Mn ions diluted in CdTe (bulk and quantum wells) can be detected through the Kerr rotation associated to excitonic transitions. Zeeman transitions within and between hyperfine multiplets are clearly observed in zero and small magnetic fields and reveal the local symmetry because of crystal field and strain. The linewidths of these resonances are close to the dipolar limit. The sensitivity is high enough to open the way towards the detection of a few spins in systems where the decoherence due to nuclear spins can be suppressed by isotopic enrichment, and towards spin resonance microscopy with important applications in biology and materials science.

Date: 2015
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DOI: 10.1038/ncomms9121

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