52 citations · 196 across the 6 of their papers we have counts for
6 papers · 1 filter
Anisotropy and suppression of spin--orbit interaction in a GaAs double quantum dot
Andrea Hofmann, Ville F. Maisi, Tobias Krähenmann +4
The spin-flip tunneling rates are measured in GaAs-based double quantum dots by time-resolved charge detection. Such processes occur in the Pauli spin blockade regime with two elec…
Measuring the degeneracy of discrete energy levels using a GaAs/AlGaAs quantum dot
Andrea Hofmann, Ville F. Maisi, Carolin Gold +8
We demonstrate an experimental method for measuring quantum state degeneracies in bound state energy spectra. The technique is based on the general principle of detailed balance, a…
Investigating Energy Scales of Fractional Quantum Hall States using Scanning Gate Microscopy
Beat A. Braem, Tobias Krähenmann, Szymon Hennel +4
We use the voltage biased tip of a scanning force microscope at a temperature of 35\,mK to locally induce the fractional quantum Hall state of in a split-gate defined const…
Equilibrium free energy measurement of a confined electron driven out of equilibrium
Andrea Hofmann, Ville F. Maisi, Clemens Rössler +7
We study out-of equilibrium properties of a quantum dot in a GaAs/AlGaAs two-dimensional electron gas. By means of single electron counting experiments, we measure the distribution…
Spectroscopy of Equilibrium and Non-Equilibrium Charge Transfer in Semiconductor Quantum Structures
Clemens Rössler, Simon Burkhard, Tobias Krähenmann +7
We investigate equilibrium and non-equilibrium charge-transfer processes by performing high-resolution transport spectroscopy. Using electrostatically defined quantum dots for ener…
Reactive-Ion-Etched Graphene Nanoribbons on a Hexagonal Boron Nitride Substrate
Dominik Bischoff, Tobias Krähenmann, Susanne Dröscher +4
We report on the fabrication and electrical characterization of both single layer graphene micron-sized devices and nanoribbons on a hexagonal boron nitride substrate. We show that…