Controlling crystal lattice structural disorder tunes current density/ optimizes high-temperature superconductivity in iron selenide

https://phys.org/news/2026-09-disorder-key-tuning-high-temperature.html

"unlike for other unconventional high-temperature superconductors, where electron count tuning via doping governs behavior, for iron selenide imperfections hit by moving electrons drive superconduction... not an unintended side effect, disorder plays primary rather than secondary role... provides valuable theoretical insights for engineering and optimizing future high-temperature superconducting materials for lossless energy transmission"