Superconductivity Mediated Long Range Magnetic Coupling
Superconductivity
2026-05-18 v2
Abstract
We study a Rashba superconductor thin film with ferromagnetic insulators (FIs) placed on top of it. We show that the ferromagnetic insulators generate circular super-currents, enabling long-range magnetic interactions (LRMI), decaying in power laws. In the static case, the long-range magnetic interaction can be ferromagnetic, in contrast to previous studies showing that superconductor mediates anti-ferromagnetic interactions decaying exponentially. Surprisingly, we find that in the dynamic case, the LRMI has a different distance dependence. Our results have potential applications in superconducting spintronics.
Keywords
Cite
@article{arxiv.2605.10139,
title = {Superconductivity Mediated Long Range Magnetic Coupling},
author = {Ming Yan Wang and Yi Liu and Yao Lu},
journal= {arXiv preprint arXiv:2605.10139},
year = {2026}
}
Comments
18 pages, 3 figures