Topological π Josephson junction in superconducting Rashba wires
Teemu Ojanen
DOI 10.1103/PhysRevB.87.100506 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
In this Rapid Communication we show that Rashba-based topological superconductor nanowires, where the spin-orbit coupling may change its sign, support three topological phases protected by chiral symmetry. When a superconducting phase gradient is applied over the interface of the two nontrivial phases, the Andreev spectrum is qualitatively phase shifted by π compared to usual Majorana weak links. The topological π junction has the striking property of exhibiting a maximum supercurrent in the vicinity of vanishing phase difference. Qualitative features of the junction are robust against disorder and magnetic fields violating chiral symmetry. The studied system could be realized by local gating of the wire or by an appropriate stacking of permanent magnets in synthetic Rashba systems.
Similar papers
Andreev spin qubits in multichannel Rashba nanowires
similarity 0.90Sunghun Park & A. Levy Yeyati
Source status unknown — claims are unverified
Full proximity treatment of topological superconductors in Josephson-junction architectures
similarity 0.90F. Setiawan et al. · 2019 · arXiv:1903.00844
Source status unknown — claims are unverified
Josephson current between topological and conventional superconductors
similarity 0.89P. A. Ioselevich et al.
Source status unknown — claims are unverified
Crystalline anisotropic topological superconductivity in planar Josephson junctions
similarity 0.89Joseph D. Pakizer et al.
Source status unknown — claims are unverified
Josephson diode effect in multichannel Rashba nanowires: role of inter-subband coupling
similarity 0.89Ardamon Sten & Sudeep Kumar Ghosh · 2026 · arXiv:2604.19385
Source status unknown — claims are unverified
Tuning Topological Superconductivity in Phase-Controlled Josephson Junctions with Rashba and Dresselhaus Spin-Orbit Coupling
similarity 0.88Benedikt Scharf et al. · 2019 · arXiv:1904.08981
Source status unknown — claims are unverified