Altermagnets, theorised to exist but never before seen, have been measured for the first time and they could help us make new types of magnetic computers
A new kind of magnetism has been measured for the first time. Altermagnets, which contain a blend of properties from different classes of existing magnets, could be used to make high capacity and fast memory devices or new kinds of magnetic computers., a ferromagnet, the effects of which can be seen in objects with relatively strong external magnetic fields like fridge magnets or compass needles.
researchers predicted a perplexing electric current in the crystal structure of certain antiferromagnets, called the anomalous Hall effect Altermagnets would look like antiferromagnets, but the sheets of spins would look the same when rotated from any angle. This would explain the Hall effect, but no one had seen the electronic signature of this structure itself, so scientists were unsure whether it was definitely a new kind of magnetism.
The electrons seemed to be split into two groups, which allows them more movement inside the crystal and is the source of the unusual altermagnetic properties. “This gave direct evidence that we can talk about altermagnets and that they behave exactly as predicted by theory,” says Krempasky.
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