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The magnetic anisotropy of individually addressed spin states
L. C. J. M. Peters, P. C. M. Christianen, H. Engelkamp +6
Controlling magnetic anisotropy is a key requirement for the fundamental understanding of molecular magnetism and is a prerequisite for numerous applications in magnetic storage, s…
Manipulating quantum Hall edge channels in graphene through Scanning Gate Microscopy
Lennart Bours, Stefano Guiducci, Alina Mreńca-Kolasińska +3
We show evidence of the backscattering of quantum Hall edge channels in a narrow graphene Hall bar, induced by the gating effect of the conducting tip of a Scanning Gate Microscope…
Linear magnetoresistance in a quasi-free two dimensional electron gas in an ultra-high mobility GaAs quantum well
T. Khouri, U. Zeitler, C. Reichl +4
We report a magnetotransport study of an ultra-high mobility (\,cm\,V\,s) -type GaAs quantum well up to 33 T. A strong linear magne…
Magnetotransport in single layer graphene in a large parallel magnetic field
F. Chiappini, S. Wiedmann, M. Titov +7
Graphene on hexagonal boron-nitride (h-BN) is an atomically flat conducting system that is ideally suited for probing the effect of Zeeman splitting on electron transport. We demon…
Lifting of the Landau level degeneracy in graphene devices in a tilted magnetic field
F. Chiappini, S. Wiedmann, K. S. Novoselov +4
We report on transport and capacitance measurements of graphene devices in magnetic fields up to 30 T. In both techniques, we observe the full splitting of Landau levels and we emp…
Temperature-driven transition from a semiconductor to a topological insulator
Steffen Wiedmann, Andreas Jost, Cornelius Thienel +6
We report on a temperature-induced transition from a conventional semiconductor to a two-dimensional topological insulator investigated by means of magnetotransport experiments on…