137 citations · 579 across the 19 of their papers we have counts for
20 papers
Si- and C-Induced Modifications in Vapor-Solid-Grown InGaAs Nanowires: From Crystal Structure to Carrier Dynamics
Hamidreza Esmaielpour, Leopold Rothmayer, Thomas Trinkl +5
Determining the impact of dopants in ternary III-V nanowires (NWs) is crucial for their applications in next-generation optoelectronic and photonic devices; however, the interplay…
Superconducting bistability in floating Al islands of hybrid Al/InAs nanowires
E. V. Shpagina, E. S. Tikhonov, D. Ruhstorfer +2
We investigate a non-equilibrium aspect of the current-driven superconducting-normal phase transition in floating Al islands of epitaxial full-shell Al/InAs nanowires. Within a tra…
Interplay of Electron Trapping by Defect Midgap State and Quantum Confinement to Optimize Hot Carrier Effect in a Nanowire Structure
Imam Makhfudz, Hamidreza Esmaielpour, Yaser Hajati +2
Hot carrier effect, a phenomenon where charge carriers generated by photon absorption remain energetic by not losing much energy, has been one of the leading strategies in increasi…
High-dimensional acousto-optoelectric correlation spectroscopy reveals coupled carrier dynamics in polytypic nanowires
Maximilian M. Sonner, Daniel Rudolph, Gregor Koblmüller +1
The authors combine acousto-optoelectric and multi-channel photon correlation spectroscopy to probe spatio-temporal carrier dynamics induced by a piezoelectric surface acoustic wav…
Self-induced ultrafast electron-hole plasma temperature oscillations in nanowire lasers
Andreas Thurn, Jochen Bissinger, Stefan Meinecke +6
Nanowire lasers can be monolithically and site-selectively integrated onto silicon photonic circuits. To assess their full potential for ultrafast opto-electronic devices, a detail…
Ultrathin catalyst-free InAs nanowires on silicon with distinct 1D sub-band transport properties
Fabio del Giudice, Jonathan Becker, Claudio de Rose +6
Ultrathin InAs nanowires (NW) with one-dimensional (1D) sub-band structure are promising materials for advanced quantum-electronic devices, where dimensions in the sub-30 nm diamet…
Noise insights into electronic transport
S. U. Piatrusha, L. V. Ginzburg, E. S. Tikhonov +6
Typical experimental measurement is set up as a study of the system's response to a stationary external excitation. This approach considers any random fluctuation of the signal as…
Dislocation-induced thermal transport anisotropy in single-crystal group-III nitride films
Bo Sun, Georg Haunschild, Carlos Polanco +4
Dislocations, one-dimensional lattice imperfections, are common to technologically important materials such as III-V semiconductors, and adversely affect heat dissipation in e.g.,…
Proximity effect and interface transparency in Al/InAs-nanowire/Al diffusive junctions
A. V. Bubis, A. O. Denisov, S. U. Piatrusha +6
We investigate the proximity effect in InAs nanowire (NW) junctions with superconducting contacts made of Al. The carrier density in InAs is tuned by means of the back gate voltage…
Long-term mutual phase locking of picosecond pulse pairs generated by a semiconductor nanowire laser
B. Mayer, A. Regler, S. Sterzl +6
The ability to generate phase-stabilised trains of ultrafast laser pulses by mode-locking underpins photonics research in fields such as precision metrology and spectroscopy. Howev…
Ultrafast photodetection in the quantum wells of single AlGaAs/GaAs-based nanowires
Nadine Erhard, Stefan Zenger, Stefanie Morkötter +8
We investigate the ultrafast optoelectronic properties of single Al0.3Ga0.7As/GaAs-core-shell-nanowires. The nanowires contain GaAs-based quantum wells. For a resonant excitation o…
Photocurrents in a Single InAs Nanowire/ Silicon Heterojunction
Andreas Brenneis, Jan Overbeck, Julian Treu +7
We investigate the optoelectronic properties of single indium arsenide nanowires, which are grown vertically on p-doped silicon substrates. We apply a scanning photocurrent microsc…
Dynamic Acoustic Control of Individual Optically Active Quantum Dot-like Emission Centers in Heterostructure Nanowires
Matthias Weiß, Jörg B. Kinzel, Florian J. R. Schülein +10
We probe and control the optical properties of emission centers forming in radial het- erostructure GaAs-Al0.3Ga0.7As nanowires and show that these emitters, located in Al0.3Ga0.7A…
Directional and dynamic modulation of the optical emission of an individual GaAs nanowire using surface acoustic waves
Jörg B. Kinzel, Daniel Rudolph, Max Bichler +5
We report on optical experiments performed on individual GaAs nanowires and the ma- nipulation of their temporal emission characteristics using a surface acoustic wave. We find a p…
Independent dynamic acousto-mechanical and electrostatic control of individual quantum dots in a LiNbO-GaAs hybrid
J. Pustiowski, K. Müller, M. Bichler +4
We demonstrate tuning of single quantum dot emission lines by the combined action of the dynamic acoustic field of a radio frequency surface acoustic wave and a static electric fie…
Radio frequency occupancy state control of a single nanowire quantum dot
Matthias Weiß, Florian J. R. Schülein, Jörg B. Kinzel +8
The excitonic occupancy state of a single, nanowire-based, heterostructure quantum dot is dynamically programmed by a surface acoustic wave. The quantum dot is formed by an interfa…
Acoustically regulated carrier injection into a single optically active quantum dot
Florian J. R. Schülein, Kai Müller, Max Bichler +4
We study the carrier injection into a single InGaAs/GaAs quantum dot regulated by a radio frequency surface acoustic wave. We find that the time of laser excitation during the acou…
All optical quantum control of a spin-quantum state and ultrafast transduction into an electric current
K. Müller, T. Kaldewey, R. Ripszam +6
The ability to control and exploit quantum coherence and entanglement drives research across many fields ranging from ultra-cold quantum gases to spin systems in condensed matter.…
Surface acoustic wave controlled charge dynamics in a thin InGaAs quantum well
Florian J. R. Schülein, Jens Pustiowski, Kai Müller +5
We experimentally study the optical emission of a thin quantum well and its dynamic modulation by a surface acoustic wave (SAW). We observe a characteristic transition of the modul…
In vacancies in InN grown by plasma-assisted molecular beam epitaxy
Floris Reurings, Filip Tuomisto, Chad S. Gallinat +2
The authors have applied positron annihilation spectroscopy to study the effect of different growth conditions on vacancy formation in In- and N-polar InN grown by plasma-assisted…