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Title: Multidimensional spectroscopy of magneto-excitons at high magnetic fields

Journal Article · · Journal of Chemical Physics
DOI:https://doi.org/10.1063/5.0070113· OSTI ID:1832060

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.

Sponsoring Organization:
USDOE
Grant/Contract Number:
NA-0003525; SC0012635
OSTI ID:
1832060
Journal Information:
Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Vol. 155 Journal Issue: 20; ISSN 0021-9606
Publisher:
American Institute of PhysicsCopyright Statement
Country of Publication:
United States
Language:
English

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