3 papers
cond-mat.str-el2020
Spin Reversal of a Quantum Hall Ferromagnet at a Landau Level Crossing
M. Lupatini, P. Knüppel, S. Faelt +4
When Landau levels (LLs) become degenerate near the Fermi energy in the quantum Hall regime, interaction effects can drastically modify the electronic ground state. We study the qu…
cond-mat.mes-hall2019
Nonlinear optics in the fractional quantum Hall regime
Patrick Knüppel, Sylvain Ravets, Martin Kroner +3
Engineering strong interactions between optical photons is a great challenge for quantum science. Envisioned applications range from the realization of photonic gates for quantum i…
cond-mat.mes-hall2018
Shubnikov-de Haas oscillations in optical conductivity of monolayer MoSe
T. Smoleński, O. Cotlet, A. Popert +8
We report polarization-resolved resonant reflection spectroscopy of a charge-tunable atomically-thin valley semiconductor hosting tightly bound excitons coupled to a dilute system…