Our scientists have made low-dimensional antiferromagnetic materials "dance" collectively for the first time.

On January 29th, the international top academic journal "Nature" published a research result from the physics research team at Fudan University, titled "Ferromagnetic Bistable Switching in Antiferromagnetic Stoner-Wohlfarth material". This research result discovered for the first time a special type of low-dimensional antiferromagnetic material that can collectively and uniformly flip under the action of a magnetic field, which the researchers vividly called "collective dance". This breakthrough has made a "potentially but difficult to use" material become "readable and writable". Antiferromagnetic materials theoretically flip faster and consume less electricity compared to the commonly used ferromagnetic flipping, and have the potential to be used in manufacturing more powerful storage and computing chips. In the past, scientists have struggled to accurately control and detect its internal states, but this time the team used self-developed high-definition observation techniques to directly "see" a material that can reliably switch between two stable states like flipping a card.