
Laser Pulses Flip Magnet Polarity, Opening Path to Tunable Optoelectronics
Swiss researchers reported in Nature that laser pulses can reverse the polarity of a specialised ferromagnet, demonstrating allâoptical control beyond ferrimagnetic materials. The finding points to faster, potentially lowerâenergy ways to program magnetic states, with implications for memory, spintronics and reconfigurable optoelectronic circuits, though engineering challenges remain.


















