Colloquium: Spin-orbit effects in superconducting hybrid structures

M Amundsen, J Linder, JWA Robinson, I Žutić… - Reviews of Modern …, 2024 - APS
Spin-orbit coupling (SOC) relates to the interaction between an electron's motion and its spin
and is ubiquitous in solid-state systems. Although the effect of SOC in normal-state …

Hard superconducting gap in germanium

A Tosato, V Levajac, JY Wang, CJ Boor… - Communications …, 2023 - nature.com
The co-integration of spin, superconducting, and topological systems is emerging as an
exciting pathway for scalable and high-fidelity quantum information technology. High …

Josephson transistor from the superconducting diode effect in domain wall and skyrmion magnetic racetracks

R Hess, HF Legg, D Loss, J Klinovaja - Physical Review B, 2023 - APS
In superconductors, the combination of broken time-reversal and broken inversion
symmetries can result in a critical current being dependent on the direction of current flow …

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 …

Microwave signatures of topological superconductivity in planar Josephson junctions

B Pekerten, D Brandão, BH Elfeky, T Zhou, JE Han… - Physical Review B, 2024 - APS
Planar Josephson junctions provide a platform to host topological superconductivity, which,
through manipulating Majorana bound states (MBS), could enable fault-tolerant quantum …

High-fidelity two-qubit gates of hybrid superconducting-semiconducting singlet-triplet qubits

M Spethmann, S Bosco, A Hofmann, J Klinovaja… - Physical Review B, 2024 - APS
Hybrid systems comprising superconducting and semiconducting materials are promising
architectures for quantum computing. Superconductors induce long-range interactions …

Determination of spin-orbit interaction in semiconductor nanostructures via nonlinear transport

RMA Dantas, HF Legg, S Bosco, D Loss, J Klinovaja - Physical Review B, 2023 - APS
We investigate nonlinear transport signatures stemming from linear and cubic spin-orbit
interactions in one-and two-dimensional systems. The analytical zero-temperature response …

Microscopic analysis of proximity-induced superconductivity and metallization effects in superconductor-germanium hole nanowires

C Adelsberger, HF Legg, D Loss, J Klinovaja - Physical Review B, 2023 - APS
Low-dimensional germanium hole devices are promising systems with many potential
applications such as hole spin qubits, Andreev spin qubits, and Josephson junctions, and …

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 …

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

K Laubscher, JD Sau, S Das Sarma - Physical Review B, 2024 - APS
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 …