Physicists begin to shed light on one of the most important questions regarding quantum spin liquids, and they do so by introducing a new phase of matter.
To start, they have nothing to do with everyday liquids, like water or juice, but everything to do with special magnets and how they spin. In regular magnets, when the temperature drops, the spin of the electrons essentially freezes and forms a solid piece of matter. In quantum spin liquids, however, the spin of electrons doesn't freeze -- instead the electrons stay in a constant state of flux, as they would in a free-flowing liquid.
In quantum spin liquids, disorder introduces discrepancies that essentially butt heads with the theory behind the liquids. One prevailing explanation was that when disorder is introduced, the material ceases to be a quantum spin liquid and instead is simply a magnet that's in a state of disorder."So, the big question was whether the quantum spin liquid state survives in the presence of disorder and if it does survive, how?" Plumb said.
The results deepen understanding of how disorder affects quantum systems and how to account for it, which is important as these materials are explored for use in quantum computing.The work is a part of a long line of research on exotic magnetic states from Plumb's lab at Brown. The study focuses on the compound H3LiIr2O6, a material considered to best fit the archetype for being a special type of quantum spin liquid called a Kitaev spin liquid.
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