576 citations · 5.2k across the 121 of their papers we have counts for
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Nuclear magnetic resonance and nuclear spin relaxation in AlAs quantum well probed by ESR
A. V. Shchepetilnikov, D. D. Frolov, Yu. A. Nefyodov +6
The study of nuclear magnetic resonance and nuclear spin-lattice relaxation was conducted in an asymmetrically doped to cm 16 nm AlAs quantum well gr…
Anisotropy and suppression of spin--orbit interaction in a GaAs double quantum dot
Andrea Hofmann, Ville F. Maisi, Tobias Krähenmann +4
The spin-flip tunneling rates are measured in GaAs-based double quantum dots by time-resolved charge detection. Such processes occur in the Pauli spin blockade regime with two elec…
THz ultrastrong light-matter coupling
Giacomo Scalari, Curdin Maissen, Sara Cibella +5
Cavity photon resonators with ultrastrong light-matter interactions are attracting interest both in semiconductor and superconducting systems displaying the capability to manipulat…
Heat dissipation and fluctuations in a driven quantum dot
Andrea Hofmann, Ville F. Maisi, Julien Basset +5
While thermodynamics is a useful tool to describe the driving of large systems close to equilibrium, fluctuations dominate the distribution of heat and work in small systems and fa…
Electron backscattering in a cavity: ballistic and coherent effects
A. A. Kozikov, D. Weinmann, C. Rossler +4
Numerous experimental and theoretical studies have focused on low-dimensional systems locally perturbed by the biased tip of a scanning force microscope. In all cases either open o…
Linear magnetoresistance in a quasi-free two dimensional electron gas in an ultra-high mobility GaAs quantum well
T. Khouri, U. Zeitler, C. Reichl +4
We report a magnetotransport study of an ultra-high mobility (\,cm\,V\,s) -type GaAs quantum well up to 33 T. A strong linear magne…
Improvement of the transport properties of a high-mobility electron system by intentional parallel conductance
Sebastian Peters, Lars Tiemann, Christian Reichl +3
We present a gating scheme to separate even strong parallel conductance from the magneto-transport signatures and properties of a two-dimensional electron system. By varying the el…
Measuring the degeneracy of discrete energy levels using a GaAs/AlGaAs quantum dot
Andrea Hofmann, Ville F. Maisi, Carolin Gold +8
We demonstrate an experimental method for measuring quantum state degeneracies in bound state energy spectra. The technique is based on the general principle of detailed balance, a…
Nanosecond-timescale spin transfer using individual electrons in a quadruple-quantum-dot device
T. A. Baart, N. Jovanovic, C. Reichl +2
The ability to coherently transport electron-spin states between different sites of gate-defined semiconductor quantum dots is an essential ingredient for a quantum-dot-based quant…
Coherent spin-exchange via a quantum mediator
T. A. Baart, T. Fujita, C. Reichl +2
Coherent interactions at a distance provide a powerful tool for quantum simulation and computation. The most common approach to realize an effective long-distance coupling 'on-chip…
Investigating Energy Scales of Fractional Quantum Hall States using Scanning Gate Microscopy
Beat A. Braem, Tobias Krähenmann, Szymon Hennel +4
We use the voltage biased tip of a scanning force microscope at a temperature of 35\,mK to locally induce the fractional quantum Hall state of in a split-gate defined const…
Classical origin of conductance oscillations in an integrable cavity
Christina Pöltl, Aleksey Kozikov, Klaus Ensslin +5
Scanning gate microscopy measurements in a circular ballistic cavity with a tip placed near its center yield a non-monotonic dependence of the conductance on the tip voltage. Detai…
Frequency-dependent polarization-angle-phase-shift in the microwave-induced magnetoresistance oscillations
Han-Chun Liu, Tianyu Ye, W. Wegscheider +1
Linear polarization angle, , dependent measurements of the microwave radiation-induced oscillatory magnetoresistance, , in high mobility GaAs/AlGaAs 2D electron devices…
Scanning gate imaging in confined geometries
R. Steinacher, A. A. Kozikov, C. Rössler +4
This article reports on tunable electron backscattering investigated with the biased tip of a scanning force microscope. Using a channel defined by a pair of Schottky gates, the br…
Current-controlled Spin Precession of Quasi-Stationary Electrons in a Cubic Spin-Orbit Field
P. Altmann, F. G. G. Hernandez, G. J. Ferreira +4
Space- and time-resolved measurements of spin drift and diffusion are performed on a GaAs-hosted two-dimensional electron gas. For spins where forward drift is compensated by backw…
Photoluminescence and the gallium problem for highest-mobility GaAs/AlGaAs-based 2d electron gases
F. Schläpfer, W. Dietsche, C. Reichl +2
The quest for extremely high mobilities of 2d electron gases in MBE-grown heterostructures is hampered by the available purity of the starting materials, particularly of the galliu…