Catenaa, Thursday, January 29, 2026-An international team of physicists has observed a hidden magnetic order in the pseudogap phase of matter, providing new insight into how superconductivity could be achieved at higher, potentially practical temperatures.
Researchers from Germany’s Max Planck Institute of Quantum Optics and the Simons Foundation’s Flatiron Institute used a quantum simulator with lithium atoms in an optical lattice to replicate the Fermi-Hubbard model, which describes electron interactions in solids.
Their experiments were conducted just above absolute zero, allowing unprecedented precision in monitoring electron spins and magnetic correlations.
The team discovered that, even when electrons were “doped” and magnetic order was assumed disrupted, an underlying pattern of spin alignment persisted.
Observations with a quantum gas microscope produced more than 35,000 images, revealing that magnetic correlations follow a universal pattern connected to the pseudogap temperature — the point at which electrons begin transitioning toward superconductivity.
Beyond single-pair interactions, the researchers identified complex structures where up to five particles influence one another simultaneously.
This layered organization may help explain how pseudogap behavior leads to superconductivity and could inform future materials capable of conducting electricity without resistance at higher temperatures.
Lead author Thomas Chalopin said the findings uncover one of the mechanisms potentially related to superconductivity.
CCQ director Antoine Georges highlighted the importance of combining theory, classical simulation and quantum analog experiments to explore these collective quantum phenomena.
The study, published in the Proceedings of the National Academy of Sciences on January 21, 2025, marks a step toward understanding the pseudogap phase and developing room-temperature superconductors, which could revolutionize energy transmission, quantum computing, and other applications.
