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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…
Ballistic supercurrent discretization and micrometer-long Josephson coupling in germanium
N. W. Hendrickx, M. L. V. Tagliaferri, M. Kouwenhoven +6
We fabricate Josephson field-effect-transistors in germanium quantum wells contacted by superconducting aluminum and demonstrate supercurrents carried by holes that extend over jun…
Zeeman effect induced 0- transitions in ballistic Dirac semimetal Josephson junctions
Chuan Li, Bob de Ronde, Jorrit de Boer +5
One of the consequences of Cooper pairs having a finite momentum in the interlayer of a Josephson junction, is -junction behavior. The finite momentum can either be due to an ex…
Bulk and surface states carried supercurrent in ballistic Nb-Dirac semimetal Cd3As2 nanowire-Nb junctions
Cai-Zhen Li, Chuan Li, Li-Xian Wang +4
A three-dimensional Dirac semimetal has bulk Dirac cones in all three momentum directions and Fermi arc-like surface states, and can be converted into a Weyl semimetal by breaking…
Bulk contribution to magnetotransport properties of low defect-density BiTe topological insulator thin films
Prosper Ngabonziza, Yi Wang, Alexander Brinkman
An important challenge in the field of topological materials is to carefully disentangle the electronic transport contribution of the topological surface states from that of the bu…