576 citations · 10.8k across the 238 of their papers we have counts for
12 papers · 1 filter
The structure of a single sharp quantum Hall edge probed by momentum-resolved tunneling
M. Huber, M. Grayson, M. Rother +3
Momentum resolved magneto-tunnelling spectroscopy is performed at a single sharp quantum Hall edge. We directly probe the structure of individual integer quantum Hall (QH) edge mod…
Electronic transport through a quantum dot network
August Dorn, Thomas Ihn, Klaus Ensslin +2
The conductance through a finite quantum dot network is studied as a function of inter-dot coupling. As the coupling is reduced, the system undergoes a transition from the antidot…
Spatially resolved manipulation of single electrons in quantum dots using a scanned probe
A. Pioda, S. Kicin, T. Ihn +7
The scanning metallic tip of a scanning force microscope was coupled capacitively to electrons confined in a lithographically defined gate-tunable quantum dot at a temperature of 3…
Activated Transport in the individual Layers that form the =1 Exciton Condensate
R. D. Wiersma, J. G. S. Lok, S. Kraus +6
We observe the total filling factor =1 quantum Hall state in a bilayer two-dimensional electron system with virtually no tunnelling. We find thermally activated transport in…
Kondo Effect in a Many-Electron Quantum Ring
A. Fuhrer, T. Ihn, K. Ensslin +2
The Kondo effect is investigated in a many-electron quantum ring as a function of magnetic field. For fields applied perpendicular to the plane of the ring a modulation of the Kond…
Spin Effects in a Quantum Ring
T. Ihn, A. Fuhrer, K. Ensslin +2
Recent experiments are reviewed that explore the spin states of a ring-shaped many-electron quantum dot. Coulomb-blockade spectroscopy is used to access the spin degree of freedom.…
Observation of single defect relaxation in a freely suspended nano resonator
Florian W. Beil, Robert H. Blick, Achim Wixforth +3
Relaxation of single defects in a nanometer sized resonator is observed by coupling surface acoustic waves to a freely suspended beam. The surface waves act on the resonator as dri…
Probing Spin-Polarized Currents in the Quantum Hall Regime
Thomas Herrle, Tobias Leeb, Guido Schollerer +1
An experiment to probe spin-polarized currents in the quantum Hall regime is suggested that takes advantage of the large Zeeman-splitting in the paramagnetic diluted magnetic semic…
High-field magnetoresistance of Fe/GaAs/Fe tunnel junctions
M. Zenger, J. Moser, W. Wegscheider +2
We investigate transport through 6 to 10 nm thin epitaxial GaAs(001) barriers sandwiched between polycrystalline iron films. Apart from a pronounced tunneling magnetoresistance eff…
Influence of manganese contamination on high-mobility GaAs/AlGaAs heterostructures
Klaus Wagenhuber, Hans-Peter Tranitz, Matthias Reinwald +1
Photoluminescence and magnetotransport measurements have been performed to assess the quality of modulation doped GaAs/AlGaAs heterostructures. The temporal evolution of the low-te…
Can an electric current orient spins in quantum wells?
S. D. Ganichev, S. N. Danilov, Petra Schneider +5
A longstanding theoretical prediction is the orientation of spins by an electrical current flowing through low-dimensional carrier systems of sufficiently low crystallographic symm…
Spin relaxation times of 2D holes from spin sensitive bleaching of inter-subband absorption
Petra Schneider, J. Kainz, S. D. Ganichev +9
We present spin relaxation times of 2D holes obtained by means of spin sensitive bleaching of the absorption of infrared radiation in p-type GaAs/AlGaAs quantum wells (QWs). It is…