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Electrons ‘Split’ in New Form of Matter

Quasiparticles, called Majorana fermions, have been observed.

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Physicists have found a new state of matter. That’s both over- and understating it: The solid-liquid-gas trifecta still holds strong. What’s important about this new type of matter happens at the quantum scale — magnetically, the electrons behave as though they are split in two. Researchers detected the behavior in a crystal of ruthenium trichloride at the Oak Ridge National Laboratory in Tennessee. They used a huge particle accelerator to shoot neutrons at the sample and ob...
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