The article suggests it will make a dramatic reduction in energy usage by server farms. The hunt for bitcoins is an example of electricity usage of no benefit to the world as a whole.
Presumably it could also reduce weight and increase efficiency in EVs.
"The researchers studied crystals of manganese telluride, a prime altermagnetic suspect. As predicted, the spins of neighbouring electrons alternated — meaning, externally, the opposing spins would cancel each other out, just as in an antiferromagnet. But additional complexity in the crystal structure, namely the orientation of the atoms, produced an internal magnetic field about a thousand times stronger than that of a fridge magnet."
FT,com
Presumably it could also reduce weight and increase efficiency in EVs.
"The researchers studied crystals of manganese telluride, a prime altermagnetic suspect. As predicted, the spins of neighbouring electrons alternated — meaning, externally, the opposing spins would cancel each other out, just as in an antiferromagnet. But additional complexity in the crystal structure, namely the orientation of the atoms, produced an internal magnetic field about a thousand times stronger than that of a fridge magnet."
FT,com
