122 citations · 464 across the 13 of their papers we have counts for
9 papers · 1 filter
Electron spin relaxation in GaAs quantum dot systems - The role of the hyperfine interaction
Johannes Voss, Daniela Pfannkuche
We present numerical results for electron spin relaxation rates for single and laterally coupled double GaAs quantum dots in a perpendicular magnetic field. As source of spin relax…
Response of incompressible fractional quantum Hall states to magnetic and non-magnetic impurities
Karel Výborný, Christian Müller, Daniela Pfannkuche
Using exact diagonalization we examine the response of several most prominent fractional quantum Hall states to a single local impurity. The 2/3 singlet state is found to be more i…
Integral and fractional Quantum Hall Ising ferromagnets
K. Vyborny, O. Certik, D. Pfannkuche +3
We compare quantum Hall systems at filling factor 2 to those at filling factors 2/3 and 2/5, corresponding to the exact filling of two lowest electron or composite fermion (CF) Lan…
Probing level renormalization by sequential transport through double quantum dots
Bernhard Wunsch, Matthias Braun, Jürgen König +1
We study electron transport through double quantum dots in series. The tunnel coupling of the discrete dot levels to external leads causes a shift of their energy. This energy reno…
Cotunneling-mediated transport through excited states in the Coulomb blockade regime
R. Schleser, T. Ihn, E. Ruh +5
We present finite bias transport measurements on a few-electron quantum dot. In the Coulomb blockade regime, strong signatures of inelastic cotunneling occur which can directly be…
Isospin Blockade in Transport through Vertical Double Quantum Dots
Bernhard Wunsch, David Jacob, Daniela Pfannkuche
We study the spectrum and the transport properties of two identical, vertically coupled quantum dots in a perpendicular magnetic field. We find correlation-induced energy crossings…