Majorana bound states in germanium Josephson junctions via phase control

M Luethi, HF Legg, K Laubscher, D Loss, J Klinovaja - Physical Review B, 2023 - APS
We consider superconductor-normal-superconductor-normal-superconductor (SNSNS)
planar Josephson junctions in hole systems with spin-orbit interaction that is cubic in …

Majorana zero modes in gate-defined germanium hole nanowires

K Laubscher, JD Sau, S Das Sarma - Physical Review B, 2024 - APS
We theoretically study gate-defined one-dimensional channels in planar Ge hole gases as a
potential platform for non-Abelian Majorana zero modes. We model the valence band holes …

Gate-defined quantum point contacts in a germanium quantum well

H Gao, ZZ Kong, P Zhang, Y Luo, H Su, XF Liu… - Nanoscale, 2024 - pubs.rsc.org
We report an experimental study of quantum point contacts defined in a high-quality strained
germanium quantum well with layered electric gates. At a zero magnetic field, we observed …

InP/GaSb core-shell nanowires: a practical proposal for Majorana modes in a full-shell hybrid geometry with hole bands

A Vezzosi, C Payá, P Wójcik, A Bertoni… - arXiv preprint arXiv …, 2024 - arxiv.org
Full-shell hybrid nanowires (NWs), structures comprising a superconductor shell that
encapsulates a semiconductor (SM) core, have attracted considerable attention in the …

Germanium-based hybrid semiconductor-superconductor topological quantum computing platforms: Disorder effects

K Laubscher, JD Sau, SD Sarma - arXiv preprint arXiv:2404.16285, 2024 - arxiv.org
It was recently suggested that proximitized gate-defined Ge hole nanowires could serve as
an alternative materials platform for the realization of topological Majorana zero modes …