576 citations · 10.8k across the 238 of their papers we have counts for
10 papers · 2 filters
Electron-electron interaction in 2D and 1D ferromagnetic (Ga,Mn)As
Daniel Neumaier, Markus Schlapps, Ursula Wurstbauer +4
We investigated the magnetotransport in high quality ferromagnetic (Ga,Mn)As films and wires. At low temperature the conductivity decreases with decreasing temperature without satu…
Manifestation of a complex edge excitation structure in the fractional quantum Hall regime at high filling factors
E. V. Deviatov, A. Lorke, W. Wegscheider
We experimentally study equilibration across the sample edge at high fractional filling factors 4/3, 5/3 under experimental conditions, which allow us to obtain high imbalance cond…
All-electric detectors of the polarization state of terahertz laser radiation (extended version)
S. D. Ganichev, W. Weber, J. Kiermaier +7
Two types of room temperature detectors of terahertz laser radiation have been developed which allow in an all-electric manner to determine the plane of polarization of linearly po…
Shock Waves in Nanomechanical Resonators
Florian W. Beil, Achim Wixforth, Werner Wegscheider +3
The dream of every surfer is an extremely steep wave propagating at the highest speed possible. The best waves for this would be shock waves, but are very hard to surf. In the nano…
Exciton condensate at a total filling factor of 1 in Corbino 2D electron bilayers
L. Tiemann, J. G. S. Lok, W. Dietsche +4
Magneto-transport and drag measurements on a quasi-Corbino 2D electron bilayer at the systems total filling factor 1 (v_tot=1) reveal a drag voltage that is equal in magnitude to t…
Effect of Microwaves on the Current-Phase-Relation in SNS Josephson Junctions
M. Fuechsle, J. Bentner, D. A. Ryndyk +3
We investigate the current-phase-relation (CPR) of long diffusive superconductor-normal metal-superconductor (SNS) Josephson junctions in thermodynamic equilibrium and under microw…
Investigations on unconventional aspects in the quantum Hall regime of narrow gate defined channels
J. Horas, A. Siddiki, J. Moser +2
We report on theoretical and experimental investigations of the integer quantized Hall effect in narrow channels at various mobilities. The Hall bars are defined electrostatically…
Illumination-induced changes of the Fermi surface topology in three-dimensional superlattices
N. A. Goncharuk, L. Smrcka, P. Svoboda +4
The magnetoresistance of the MBE-grown GaAs/AlGaAs superlattice with Si-doped barriers has been measured in tilted magnetic fields in the as-grown state, and after brief illuminati…
Bimodal Counting Statistics in Single Electron Tunneling through a Quantum Dot
C. Fricke, F. Hohls, W. Wegscheider +1
We explore the full counting statistics of single electron tunneling through a quantum dot using a quantum point contact as non-invasive high bandwidth charge detector. The distrib…
Counterflow of electrons in two isolated quantum point contacts
V. S. Khrapai, S. Ludwig, J. P. Kotthaus +2
We study the interaction between two adjacent but electrically isolated quantum point contacts (QPCs). At high enough source-drain bias on one QPC, the drive QPC, we detect a finit…