Time-resolved charge detection with cross-correlation techniques (2009)
Küng, B., Pfäffli, O., Gustavsson, S., Ihn, T., Ensslin, K., Reinwald, M., ...
Time-resolved charge detection with cross-correlation techniques (2008)
Küng, B., Pfäffli, O., Gustavsson, S., Ihn, T., Ensslin, K., Reinwald, M., ...
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-correlation...
Wirthmann, André, Hui, Xiong, Mecking, N., Gui, Y. S., Chakraborty, T., Reinwald, M., ...
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 over a broad...
Phase coherent transport in (Ga,Mn)As (2008)
Neumaier, D., Wagner, K., Wurstbauer, U., Reinwald, M., Wegscheider, W., Weiss, D.
Quantum interference effects and resulting quantum corrections of the conductivity have been intensively studied in disordered conductors over the last decades. The knowledge of phase coherence...
Electron-electron interaction in one- and two-dimensional ferromagnetic (Ga,Mn)As (2008)
Neumaier, Daniel, Schlapps, Markus, Wurstbauer, Ursula, Sadowski, J, Reinwald, M, Wegscheider, Werner, ...
We investigated the magnetotransport in high quality ferromagnetic (Ga,Mn)As films and wires. At low temperature the conductivity decreases with decreasing temperature without saturation down to 20...
Phase coherent transport in (Ga,Mn)As (2008)
Neumaier, Daniel, Wagner, Konrad, Wurstbauer, Ursula, Reinwald, M, Wegscheider, Werner, Weiss, W
Abstract. Quantum interference effects and resulting quantum corrections of the conductivity have been intensively studied in disordered conductors over the last few decades. The knowledge of phase...
Effect of Microwaves on the Current-Phase-Relation in SNS Josephson Junctions (2007)
Fuechsle, M., Bentner, J., Ryndyk, D. A., Reinwald, M., Wegscheider, W., Strunk, C.
We investigate the current-phase-relation (CPR) of long diffusive superconductor-normal metal-superconductor (SNS) Josephson junctions in thermodynamic equilibrium and under microwave irradiation....
Gustavsson, S., Leturcq, R., Ihn, T., Ensslin, K., Reinwald, M., Wegscheider, W.
We present measurements of the fourth and fifth cumulants of the distribution of transmitted charge in a tunable quantum dot. We investigate how the measured statistics is influenced by the finite...
Pioda, A., Kicin, S., Brunner, D., Ihn, T., Sigrist, M., Ensslin, K., ...
A quantum point contact (QPC) patterned on a two-dimensional electron gas is investigated with a scanning gate setup operated at a temperature of 300 mK. The conductance of the point contact is...
Magnetic anisotropy of Ga1-xMnxAs thin films on GaAs (311)A probed by ferromagnetic resonance (2006)
Bihler, C., Huebl, H., Brandt, M., Goennenwein, S., Reinwald, M., Wurstbauer, Ursula, ...
We have studied the magnetic anisotropy of Ga1–xMnxAs thin films grown by low- temperature molecular beam epitaxy on GaAs (311)A substrates by means of ferromagnetic resonance spectroscopy. The...
Dephasing in (Ga,Mn)As nanowires and rings (2006)
Wagner, K., Neumaier, D., Reinwald, M., Wegscheider, W., Weiss, D.
To understand quantum mechanical transport in ferromagnetic semiconductor the knowledge of basic material properties like phase coherence length and corresponding dephasing mechanism are...
Influence of surface treatment on the magnetic properties of GaxMn1-xAs thin films. (2006)
Maccherozzi, F., Panaccione, G., Rossi, G., Hochstrasser, M., Sperl, Matthias, Reinwald, M., ...
Transport through (Ga,Mn)As nanoconstrictions (2006)
Schlapps, Markus, Döppe, Matthias, Wagner, Konrad, Reinwald, M., Wegscheider, Werner, Weiss, Dieter
We investigate magnetoresistance effects for transport across (Ga,Mn)As nanoislands, detached by nanoconstrictions from wider (Ga,Mn)As input leads. As in previous studies a huge magnetoresistance...
Penack, O., Schwartz, S., Martus, P., Reinwald, M., Schmidt-Hieber, M., Thiel, E., ...
Background: We performed a prospective, randomized, open-label trial to evaluate the efficacy of low-dose liposomal amphotericin B (L-AmB) to reduce the incidence of invasive fungal infections (IFI)...
Penack, O., Schwartz, S., Martus, P., Reinwald, M., Schmidt-Hieber, M., Thiel, E., ...
Background: We performed a prospective, randomized, open-label trial to evaluate the efficacy of low-dose liposomal amphotericin B (L-AmB) to reduce the incidence of invasive fungal infections (IFI)...
Probing a Kondo correlated quantum dot with spin spectroscopy (2005)
Kupidura, D., Rogge, M. C., Reinwald, M., Wegscheider, W., Haug, R. J.
We investigate Kondo effect and spin blockade observed on a many-electron quantum dot and study the magnetic field dependence. At lower fields a pronounced Kondo effect is found which is replaced by...
Phase coherence in the inelastic cotunneling regime (2005)
Sigrist, M., Ihn, T., Ensslin, K., Loss, D., Reinwald, M., Wegscheider, W.
Two quantum dots with tunable mutual tunnel coupling have been embedded in a two-terminal Aharonov-Bohm geometry. Aharonov-Bohm oscillations are investigated in the cotunneling regime. Visibilities...
Coupling symmetry of quantum dot states (2005)
Rogge, M. C., Harke, B., Fricke, C., Hohls, F., Reinwald, M., Wegscheider, W., ...
With non-invasive methods, we investigate ground and excited states of a lateral quantum dot. Charge detection via a quantum point contact is used to map the dot dynamics in a regime where the...
Non-invasive detection of charge-rearrangement in a quantum dot in high magnetic fields (2005)
Fricke, C., Rogge, M. C., Harke, B., Reinwald, M., Wegscheider, W., Hohls, F., ...
We demonstrate electron redistribution caused by magnetic field on a single quantum dot measured by means of a quantum point contact as non-invasive detector. Our device which is fabricated by local...
Domain free high field superlattice transport (2005)
Feil, T., Reinwald, M., Wegscheider, W.
The fundamental condition for operating a superlattice (SL) as a Bloch oscillator is a homogeneous electric field alignment under large applied bias. This can be done by combining the nonlinear...
Noninvasive detection of charge rearrangement in a quantum dot in high magnetic fields (2005)
Fricke, C., Rogge, M. C., Harke, B., Reinwald, M., Wegscheider, W., Hohls, F., ...
Growth of (Ga,Mn)As on GaAs(001) and (311)A in a high-mobility MBE system (2005)
Reinwald, M, Wurstbauer, Ursula, Döppe, Matthias, Kipferl, W, Wagenhuber, Klaus, Tranitz, H, ...
We demonstrate the possibility to produce both GaAs/AlGaAs heterostructures with high electron mobilities and (Ga,Mn)As by molecular beam epitaxy (MBE) in the same growth chamber. The (Ga,Mn)As...
Spatially resolved manipulation of single electrons in quantum dots using a scanned probe (2004)
Pioda, A., Kicin, S., Ihn, T., Sigrist, M., Fuhrer, A., Ensslin, K., ...
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 300 mK. Single...
Spontaneous supercurrent induced by ferromagnetic pi-junctions (2003)
Bauer, A., Bentner, J., Aprili, M., Della Rocca, M. L., Reinwald, M., Wegscheider, W., ...
We present magnetization measurements of mesoscopic superconducting niobium loops containing a ferromagnetic (PdNi) pi-junction. The loops are prepared on top of the active area of a micro...