Physicists magnetize a material with light
Boston MA (SPX) Dec 26, 2024 - MIT physicists have created a new and long-lasting magnetic state in a material, using only light.
In a study appearing in Nature, the researchers report using a terahertz laser - a light source that oscillates more than a trillion times per second - to directly stimulate atoms in an antiferromagnetic material. The laser's oscillations are tuned to the natural vibrations among the material's atoms, in a way that shifts the balance of atomic spins toward a new magnetic state. Читать дальше...