108 citations · 216 across the 10 of their papers we have counts for
10 papers
Long distance electron-electron scattering detected with point contacts
Lev V. Ginzburg, Yuze Wu, Marc P. Röösli +15
We measure electron transport through point contacts in an electron gas in AlGaAs/GaAs heterostructures and graphene for a range of temperatures, magnetic fields and electron densi…
Nonlinear response of 2DEG in the quantum Hall regime
Shuichi Iwakiri, Lev V. Ginzburg, Marc P. Röösli +7
Breaking of inversion symmetry leads to nonlinear and nonreciprocal electron transport, in which the voltage response does not invert with the reversal of the current direction. Ma…
Counting Statistics of Single Electron Transport in Bilayer Graphene Quantum Dots
Rebekka Garreis, Jonas Daniel Gerber, Veronika Stará +8
We measure telegraph noise of current fluctuations in an electrostatically defined quantum dot in bilayer graphene by real-time detection of single electron tunneling with a capaci…
Spin-Selective Equilibration among Integer Quantum Hall Edge Channels
G. Nicoli, C. Adam, M. P. Röösli +6
The equilibration between quantum Hall edge modes is known to depend on the disorder potential and the steepness of the edge. Modern samples with higher mobilities and setups with…
Characterization of quasiparticle tunneling in a quantum dot from temperature dependent transport in the integer and fractional quantum Hall regime
Marc P. Röösli, Michael Hug, Giorgio Nicolí +6
We report on magnetoconductance measurements through a weakly coupled quantum dot, containing roughly 900 electrons, in a wide magnetic field range from 0 T to 12 T. We find modula…
Fractional Coulomb blockade for quasiparticle tunneling between edge channels
Marc P. Röösli, Michael Hug, Giorgio Nicolí +6
We study the magneto-conductance of a -wide quantum dot in the fractional quantum Hall regime. For a filling factor and in the quantum…
Quantum dot thermometry at ultra-low temperature in a dilution refrigerator with a He immersion cell
Giorgio Nicolí, Peter Märki, Beat A. Bräm +7
Experiments performed at a temperature of a few millikelvin require effective thermalization schemes, low-pass filtering of the measurement lines and low-noise electronics. Here, w…
Scanning Gate Microscopy in a Viscous Electron Fluid
Beat A Braem, Francesco M D Pellegrino, Alessandro Principi +10
We measure transport through a Ga[Al]As heterostructure at temperatures between 0.1 K and 30 K. Increasing the temperature enhances the electron-electron scattering rate and viscou…
Spin orbit coupling at the level of a single electron
V. F. Maisi, A. Hofmann, M. Röösli +5
We utilize electron counting techniques to distinguish a spin conserving fast tunneling process and a slower process involving spin flips in AlGaAs/GaAs-based double quantum dots.…
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…