science

In 1966, the Japanese physicist Yosuke Nagaoka conceived of a type of magnetism produced by a seemingly unnatural dance of electrons within a hypothetical material. Now, a team of physicists has spotted a version of Nagaoka’s predictions playing out within an engineered material only six atoms thick.

The discovery, recently published in the journal Nature, marks the latest advance in the five-decade hunt for Nagaoka ferromagnetism, in which a material magnetizes as the electrons within it minimize their kinetic energy, in contrast to traditional magnets. “That’s why I’m doing this kind of research: I get to learn things that we didn’t know before, see things that we haven’t seen before,” said study coauthor Livio Ciorciaro, who completed the work while a doctoral candidate at the Swiss Federal Institute of Technology Zurich’s Institute for Quantum Electronics.