Scientists have discovered a brand-new kind of magnet hiding out in a uranium compound.The compound, USb2 a so-called "singlet-based" magnet, is novel in that it generates magnetism in an entirely different way than any other magnet known to scientists.The newly discovered singlet-based magnet works in a completely different way.USb2 is like many other substances in that the electrons inside it don't tend to point their magnetic fields in the same direction, so they can't generate magnetism through their combined magnetic field strength.However, the electrons in USb2 can work together to form quantum-mechanical objects called "spin excitons". Spin excitons aren't like the normal particlesinstead, they're quasiparticles, particles that aren't discrete objects in our universe but act like they are when groups of physical particles start acting together in strange ways.Spin excitons emerge from the interactions of groups of electrons, and when they form, a magnetic field is created. Physicists had long suspected that groups of spin excitons might cluster together with their magnetic fields oriented the same way. They called the effect "singlet-based" magnetism. Now, physicists at the have shown for the first time that this sort of magnet can exist in a stable way outside of supercool environments.In the compound USb2, magnetic fields form in a flash and disappear almost as quickly. Under normal circumstances, the magnetic moments in a bar of iron become aligned gradually, without sharp transitions between magnetized and unmagnetized states. In a singlet-based magnet, the jump between states is sharper. Spin-excitons, usually temporary objects, become stable when they cluster together. And when those clusters form, they start a cascade. Like dominoes falling into place, spin excitons fill the entire substance very quickly and suddenly, and align with one another. The advantage of this sort of magnet is that it flips between magnetized and unmagnetized states much more easily than normal magnets. In singlet magnets, the magnetic field doesn't result from a large group of chaotic magnetic fields suddenly aligning, but rather from the appearance of a new kind of magnetic field amid the existing particles.