We figured out how to make electricity flow perfectly through materials that are normally terrible at it. It shouldn't work, but it does.
March 27, 2026
Original Paper
Prediction of new superconducting bilayers heterostructures using quantum confinement and proximity effects
arXiv · 2603.25648
The Takeaway
Superconductivity usually requires rare and specific materials, but this research shows that by layering thin films of non-superconducting metals, "quantum confinement" can force their electrons to pair up and flow without resistance. This technique could allow us to engineer high-efficiency electronics out of much more common and accessible materials.
From the abstract
A central challenge in nanoscale superconductivity is to understand and exploit the combined action of quantum confinement and proximity effects in experimentally realistic metallic heterostructures. We theoretically investigate superconducting bilayer heterostructures in which these two effects coexist. Using a generalized Eliashberg framework that incorporates both quantum confinement and proximity coupling, we show that their interplay can substantially enhance the superconducting critical te