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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

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.
November 2019 Our work on "Air tightness of hBN encapsulation and its impact on Raman spectroscopy of van der Waals materials" is published in 2D Materials.
September 2019 Our work on "Tuning spontaneous emission through waveguide cavity effects in semiconductor nanowires" is published in Nano Letters.
May 2019 Our work on "Ultralong spin lifetimes in one-dimensional semiconductor nanowires" is published in Applied Physics Letters.
April 2019 Our work on "Ultrafast transition between exciton phases in van der Waals heterostructures" is published in Nature Materials.
February 2019

Our work on "Absence of a giant spin Hall effect in plasma-hydrogenated graphene" is published in Physical Review B.

October 2018

Tobias Korn becomes a faculty member at the University of Rostock

August 2018

Our work on "Zeeman Splitting and Inverted Polarization of Biexciton Emission in Monolayer WS2" is published in Physical Review Letters.

Juli 2018

Our work on "Two-dimensional semiconductors in the regime of strong light-matter coupling" is published in Nature Communications.

Juni 2018

Our work on "Asymmetric g Tensor in Low-Symmetry Two-Dimensional Hole Systems" is published in Physical Review X.

Mai 2018

Our work on "Exciton Diffusion and Halo Effects in Monolayer Semiconductors" is published in Physical Review Letters.

May 2018

Our work on "Lightwave valleytronics in a monolayer of tungsten diselenide" is published in Nature.

April 2018

Our work on "Momentum-space indirect interlayer excitons in transition-metal dichalcogenide van der Waals heterostructures" is published in Nature Physics.

January 2018

Our work on "Dielectric Engineering of Electronic Correlations in a van der Waals Heterostructure" is published in Nano Letters.

  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