Author
Listed:
- E. A. Zhukov
(Technische Universität Dortmund)
- E. Kirstein
(Technische Universität Dortmund)
- N. E. Kopteva
(Physical Faculty of St. Petersburg State University
St. Petersburg State University)
- F. Heisterkamp
(Technische Universität Dortmund
Federal Institute for Occupational Safety and Health (BAuA))
- I. A. Yugova
(Physical Faculty of St. Petersburg State University)
- V. L. Korenev
(Russian Academy of Sciences)
- D. R. Yakovlev
(Technische Universität Dortmund
Russian Academy of Sciences)
- A. Pawlis
(Forschungszentrum Jülich)
- M. Bayer
(Technische Universität Dortmund
Russian Academy of Sciences)
- A. Greilich
(Technische Universität Dortmund)
Abstract
The coherent spin dynamics of fluorine donor-bound electrons in ZnSe induced by pulsed optical excitation is studied in a perpendicular applied magnetic field. The Larmor precession frequency serves as a measure for the total magnetic field exerted onto the electron spins and, surprisingly, does not increase linearly with the applied field, but shows a step-like behavior with pronounced plateaus, given by multiples of the laser repetition rate. This discretization occurs by a feedback mechanism in which the electron spins polarize the nuclear spins, which in turn generate a local Overhauser field adjusting the total magnetic field accordingly. Varying the optical excitation power, we can control the plateaus, in agreement with our theoretical model. From this model, we trace the observed discretization to the optically induced Stark field, which causes the dynamic nuclear polarization.
Suggested Citation
E. A. Zhukov & E. Kirstein & N. E. Kopteva & F. Heisterkamp & I. A. Yugova & V. L. Korenev & D. R. Yakovlev & A. Pawlis & M. Bayer & A. Greilich, 2018.
"Discretization of the total magnetic field by the nuclear spin bath in fluorine-doped ZnSe,"
Nature Communications, Nature, vol. 9(1), pages 1-8, December.
Handle:
RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-04359-6
DOI: 10.1038/s41467-018-04359-6
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