136 citations · 676 across the 20 of their papers we have counts for
20 papers
Spatial mapping and manipulation of two tunnel-coupled quantum dots
Magdalena Huefner, Bruno Kueng, Stephan Schnez +4
The metallic tip of a scanning force microscope operated at 300 mK is used to locally induce a potential in a fully controllable double quantum dot defined via local anodic oxidati…
An in-situ tunable radio-frequency quantum point contact
Thomas Müller, Bruno Küng, Paul Studerus +5
Incorporating a variable capacitance diode into a radio-frequency matching circuit allows us to in-situ tune the resonance frequency of an RF quantum point contact, increasing the…
Time-resolved charge detection with cross-correlation techniques
B. Küng, O. Pfäffli, S. Gustavsson +4
We present time-resolved charge sensing measurements on a GaAs double quantum dot with two proximal quantum point contact (QPC) detectors. The QPC currents are analyzed with cross-…
Broadband electrical detection of spin excitations in (Ga,Mn)As using a photovoltage technique
André Wirthmann, Xiong Hui, N. Mecking +6
We report on microwave photovoltage and simultaneous magnetotransport measurements in a (Ga,Mn)As film oriented normal to the magnetic field. We detect the ferromagnetic resonance…
Phase coherent transport in (Ga,Mn)As
D. Neumaier, K. Wagner, U. Wurstbauer +3
Quantum interference effects and resulting quantum corrections of the conductivity have been intensively studied in disordered conductors over the last decades. The knowledge of ph…
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…