3 papers
cond-mat.mes-hall2019
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…
cond-mat.mes-hall2019
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…
cond-mat.mes-hall2016
Electric-field dependent g-factor anisotropy in Ge-Si core-shell nanowire quantum dots
Matthias Brauns, Joost Ridderbos, Ang Li +2
We present angle-dependent measurements of the effective g-factor g* in a Ge-Si core-shell nanowire quantum dot. g* is found to be maximum when the magnetic field is pointing perpe…