3 papers
cond-mat.supr-con2026
Spin-polarized supercurrents and Josephson diode effect in altermagnets
Janus F. Niebuhr, Matthias Eschrig, Danilo Nikolić
We present a systematic theoretical study of the Josephson effect in junctions consisting of a d-wave altermagnet (AM) placed between two BCS superconductors (SC). In general, the…
cond-mat.supr-con2025
Theory of quantum-geometric charge and spin Josephson diode effects in strongly spin-polarized hybrid structures with noncoplanar spin textures
Niklas L. Schulz, Danilo Nikolić, Matthias Eschrig
We present a systematic study of the spin-resolved Josephson diode effect (JDE) in strongly spin-polarized ferromagnets (sFM) coupled to singlet superconductors (SC) via ferromagne…
cond-mat.supr-con2025
Quantum-geometric spin and charge Josephson diode effects
Niklas L. Schulz, Danilo Nikolić, Matthias Eschrig
We present a general mechanism for large charge and spin Josephson diode effects in strongly spin-polarized superconductor-ferromagnet hybrid structures with a noncoplanar spin tex…