#A structural light switch for magnetism
“#A structural light switch for magnetism” Depiction of the antiferromagnet CoF2 transforming into a ferrimagnet under optical excitation. The red and blue arrows denote the original anti-parallel spins. Terahertz light pulses induce changes in the crystal structure that polarize the spins, creating a new magnetic state which can be used for information storage and processing. Credit: Jörg…