Spin waves revealed in two-dimensional high-temperature superconductors

As electricity travels from power plants and into homes, a large amount of the initial energy dissipates as heat along the way. This inefficiency comes from a resistance to current inherent to the metallic cables used to deliver the electricity. High-temperature superconductors, however, manage to transmit energy without loss, providing a potential conduit for efficient and inexpensive power distribution all over the globe. Unfortunately, the mechanism underlying these remarkable materials remains unknown, hampering the development of more advanced materials to provide that loss-free flow of electricity.