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Optical Spectroscopy of Semiconductor Quantum Structures

Welcome to the pages of our research group!

We are exploring the quasi-particle- and the spin dynamics in semiconductor quantum structures. The materials of interest are either GaAs-AlGaAs quantum structures, like quantum wells or nanowires, or, two-dimensional crystals (transition-metal dichalcogenides), like MoS₂, MoSe₂, WS₂, and WSe₂, and their van-der-Waals heterostructures. As experimental techniques we are employing time- and spatially-resolved Kerr/Faraday rotation, time-resolved photoluminescence, Raman spectroscopy, and four-wave mixing. The experiments are typically carried out at low temperatures, and, optionally, in high magnetic fields.

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News and Highlights

December 2021	Our work on "Intersubband excitations in ultrathin core-shell nanowires in the one-dimensional quantum limit probed by resonant inelastic light scattering" is published in Physical Review B.
September 2021	Our work on "Ultrafast Charge-Transfer Dynamics in Twisted MoS₂/WSe₂ Heterostructures" is published in ACS Nano.
July 2021	Our work on "Large-Scale Mapping of Moiré Superlattices by Hyperspectral Raman Imaging" is published in Advanced Materials.
May 2021	Our work on "Moiré phonons in twisted MoSe₂–WSe₂ heterobilayers and their correlation with interlayer excitons" is published in 2D Materials.
July 2020	Our work on "Low-frequency Raman scattering in WSe₂-MoSe₂ heterobilayers: Evidence for atomic reconstruction" is published in Applied Physics Letters.
January 2020	Our work on "Inelastic light scattering by intrasubband spin-density excitations in GaAs-AlGaAs quantum wells with balanced Bychkov-Rashba and Dresselhaus spin-orbit coupling: Quantitative determination of the spin-orbit field" is published in Physical Review B.

Optical Spectroscopy of Semiconductor Quantum Structures

Welcome to the pages of our research group!

News and Highlights

Optics of Semiconductor Quantum Structures