Multidimensional spectroscopy of magneto-excitons at high magnetic fields

We perform two-dimensional Fourier transform spectroscopy on magneto-excitons in GaAs at magnetic fields and observe Zeeman splitting of the excitons. The Zeeman components are clearly resolved as separate peaks due to the two-dimensional nature of the spectra, leading to a more accurate measurement...

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Bibliographic Details
Published in:The Journal of chemical physics 2021-11, Vol.155 (20), p.204201-204201
Main Authors: Mapara, V., Stevens, C. E., Paul, J., Barua, A., Reno, J. L., McGill, S. A., Hilton, D. J., Karaiskaj, D.
Format: Article
Language:English
Subjects:
Excitation spectra
Excitons
Fourier transforms
Magnetic fields
Spectroscopy
Spectrum analysis
Splitting
Zeeman effect
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Summary:We perform two-dimensional Fourier transform spectroscopy on magneto-excitons in GaAs at magnetic fields and observe Zeeman splitting of the excitons. The Zeeman components are clearly resolved as separate peaks due to the two-dimensional nature of the spectra, leading to a more accurate measurement of the Zeeman splitting and the Landé g factors. Quantum coherent coupling between Zeeman components is observed using polarization dependent one-quantum two-dimensional spectroscopy. We use two-quantum two-dimensional spectroscopy to investigate higher four-particle correlations at high magnetic fields and reveal the role of the Zeeman splitting on the two-quantum transitions. The experimental two-dimensional spectra are simulated using the optical Bloch equations, where many-body effects are included phenomenologically.
ISSN:0021-9606
1089-7690
DOI:10.1063/5.0070113