131 citations · 474 across the 10 of their papers we have counts for
10 papers
Towards low-dimensional hole systems in Be-doped GaAs nanowires
A. R. Ullah, J. G. Gluschke, P. Krogstrup +3
GaAs was central to the development of quantum devices but is rarely used for nanowire-based quantum devices with InAs, InSb and SiGe instead taking the leading role. p-type GaAs n…
Advances in the theory of III-V Nanowire Growth Dynamics
Peter Krogstrup, Henrik I. Jørgensen, Erik Johnson +6
Nanowire (NW) crystal growth via the vapour_liquid_solid mechanism is a complex dynamic process involving interactions between many atoms of various thermodynamic states. With incr…
Doping incorporation paths in catalyst-free Be-doped GaAs nanowires
Alberto Casadei, Peter Krogstrup, Martin Heiss +7
The incorporation paths of Be in GaAs nanowires grown by the Ga-assisted method in molecular beam epitaxy has been investigated by electrical measurements of nanowires with differe…
Mesoscopic conductance fluctuations in InAs nanowire-based SNS junctions
T. S. Jespersen, M. L. Polianski, C. B. Soerensen +2
We report a systematic experimental study of mesoscopic conductance fluctuations in superconductor/normal/superconductor (SNS) devices Nb/InAs-nanowire/Nb. These fluctuations far e…
Kondo-Enhanced Andreev Tunneling in InAs Nanowire Quantum Dots
T. Sand-Jespersen, J. Paaske, B. M. Andersen +7
We report measurements of the nonlinear conductance of InAs nanowire quantum dots coupled to superconducting leads. We observe a clear alternation between odd and even occupation o…
Different quantization mechanisms in single-electron pumps driven by surface acoustic waves
P. Utko, K. Gloos, J. Bindslev Hansen +2
We have studied the acoustoelectric current in single-electron pumps driven by surface acoustic waves. We have found that in certain parameter ranges two different sets of quantize…
Observation of supercurrent enhancement in SNS junctions by non-equilibrium injection into supercurrent carrying bound Andreev states
Jonatan Kutchinsky, Rafael Taboryski, Claus B. Sorensen +2
We report for the first time enhancement of the supercurrent by means of injection in a mesoscopic three terminal planar SNSNS device made of Al on GaAs. When a current is injected…
Multiple Andreev reflections in diffusive SNS structures
Rafael Taboryski, Jonatan Kutchinsky, Jorn Bindslev Hansen +3
We report new measurements on sup-gap energy structure originating from multiple Andreev reflections in mesoscopic SNS junctions. The junctions were fabricated in a planar geometry…
Temperature dependence of the ``0.7'' 2(e^2)/h quasi plateau in strongly confined quantum point contacts
A. Kristensen, P. E. Lindelof, J. B. Jensen +8
We present new results of the ``0.7'' 2(e^2)/h structure or quasi plateau in some of the most strongly confined point contacts so far reported. This strong confinement is obtained…
Suppression of hole-hole scattering in GaAs/AlGaAs heterostructures under uniaxial compression
V. Kravchenko, N. Minina, A. Savin +3
Resistance, magnetoresistance and their temperature dependencies have been investigated in the 2D hole gas at a [001] p-GaAs/AlGaAs heterointerface under [110] unia…