Wie Physiker einen neuen Magnettyp entdeckten, der sich in aller Öffentlichkeit versteckte

>On a breezy afternoon last autumn in Cambridge, Mass., in a laboratory thrumming with the huff-whish-huff sound of refrigeration pumps, Massachusetts Institute of Technology graduate student Jiaruo Li was crafting a new device for storing digital data. She was aiming to use an exotic kind of [magnetism](https://www.scientificamerican.com/article/can-a-magnet-ever-have-only-one-pole/) discovered in the same lab the previous year to make the device faster and more energy-efficient than any competing technology. Her goal was timely given the current AI-driven boom in data centers and the exploding demand for power it portends.