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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.

News and Highlights

September 2023 Our work on "Emergent trion-phonon coupling in atomically reconstructed MoSe2-WSeheterobilayers" is published as a Letter in Physical Review Research.
January 2023 A radio report about our finding of ultrafast pseudospin quantum beats in TMDC multilayers is broadcasted in "Forschung aktuell" in "Deutschlandfunk".
August 2022 Our work on "Ultrafast pseudospin quantum beats in multilayer WSe2 and MoSe2" is published in Nature Communications.
August 2022 Our work on "Valley-magnetophonon resonance for interlayer excitons" is published in 2D Materials.
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.

  1. Universität
  2. Physik

Optics of Semiconductor Quantum Structures

Institute of Experimental and Applied Physics

University of Regensburg


Prof. Dr. Christian Schüller 

Tel. +49 (0)941 943 2078