409 citations · 2k across the 35 of their papers we have counts for
8 papers · 1 filter
Spin-Relaxation Mechanisms in InAs Quantum Well Heterostructures
J. D. S. Witt, S. J. Pauka, G. C. Gardner +6
The spin-orbit interaction and spin-relaxation mechanisms of a shallow InAs quantum well heterostructure are investigated by magnetoconductance measurements as a function of an app…
Effect of Rashba and Dresselhaus spin-orbit coupling on supercurrent rectification and magnetochiral anisotropy of ballistic Josephson junctions
Christian Baumgartner, Lorenz Fuchs, Andreas Costa +11
Simultaneous breaking of inversion- and time-reversal symmetry in Josephson junction leads to a possible violation of the equality for the current-phase relation. Thi…
Josephson Junctions Via Anodization of Epitaxial Al on an InAs Heterostructure
A. Jouan, J. D. S. Witt, G. C. Gardner +5
We combine electron beam lithography and masked anodization of epitaxial aluminium to define tunnel junctions via selective oxidation, alleviating the need for wet-etch processing…
Electrical Properties of Selective-Area-Grown Superconductor-Semiconductor Hybrid Structures on Silicon
A. Hertel, L. O. Andersen, D. M. T. van Zanten +9
We present a superconductor-semiconductor material system that is both scalable and monolithically integrated on a silicon substrate. It uses selective area growth of Al-InAs hybri…
A Josephson junction supercurrent diode
Christian Baumgartner, Lorenz Fuchs, Andreas Costa +10
Transport is called nonreciprocal when not only the sign, but also the absolute value of the current, depends on the polarity of the applied voltage. It requires simultaneously bro…
Spin-orbit Energies in Etch-Confined Superconductor-Semiconductor Nanowires
J. D. S. Witt, G. C. Gardner, C. Thomas +4
We report magneto-transport measurements of quasi-1-dimensional (1D) Al-InAs nanowires produced via etching of a hybrid superconductor-semiconductor two-dimensional electron gas (2…
Microwave Sensing of Andreev Bound States in a Gate-Defined Superconducting Quantum Point Contact
Vivek Chidambaram, Anders Kringhøj, Lucas Casparis +11
We use a superconducting microresonator as a cavity to sense absorption of microwaves by a superconducting quantum point contact defined by surface gates over a proximitized two-di…
Zeeman-driven parity transitions in an Andreev quantum dot
A. M. Whiticar, A. Fornieri, A. Banerjee +6
The Andreev spectrum of a quantum dot embedded in a hybrid semiconductor-superconductor interferometer can be modulated by electrostatic gating, magnetic flux through the interfero…