46 citations · 72 across the 2 of their papers we have counts for
9 papers · 1 filter
Nontopological zero-bias peaks in full-shell nanowires induced by flux tunable Andreev states
Marco Valentini, Fernando Peñaranda, Andrea Hofmann +7
A semiconducting nanowire fully wrapped by a superconducting shell has been proposed as a platform for obtaining Majorana modes at small magnetic fields. In this study, we demonstr…
Multiple Andreev reflections and Shapiro steps in a Ge-Si nanowire Josephson junction
Joost Ridderbos, Matthias Brauns, Ang Li +4
We present a Josephson junction based on a Ge-Si core-shell nanowire with transparent superconducting Al contacts, a building block which could be of considerable interest for inve…
Hard superconducting gap and diffusion-induced superconductors in Ge-Si nanowires
Joost Ridderbos, Matthias Brauns, Jie Shen +8
We show a hard induced superconducting gap in a Ge-Si nanowire Josephson transistor up to in-plane magnetic fields of mT, an important step towards creating and detecting Maj…
Josephson effect in a few-hole quantum dot
Joost Ridderbos, Matthias Brauns, Jie Shen +5
We use a Ge-Si core-shell nanowire to realise a Josephson field-effect transistor with highly transparent contacts to superconducting leads. By changing the electric field we gain…
Single, double, and triple quantum dots in Ge/Si nanowires
F. N. M. Froning, M. K. Rehmann, J. Ridderbos +6
We report highly tunable control of holes in Ge/Si core/shell nanowires (NWs). We demonstrate the ability to create single quantum dots (QDs) of various sizes, with low hole occupa…
Palladium gates for reproducible quantum dots in silicon
Matthias Brauns, Sergey V. Amitonov, Paul-Christiaan Spruijtenburg +1
We replace the established aluminium gates for the formation of quantum dots in silicon with gates made from palladium. We study the morphology of both aluminium and palladium gate…