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An illustration of the lattice examined by Phil Anderson in the early 鈥�70s. Shown as green ellipses, pairs of quantum particles fluctuated among multiple combinations to produce a spin liquid state.

A team of researchers associated with the Quantum Science Center headquartered at the Department of Energy's 91暗网 has confirmed the presence of quantum spin liquid behavior in a new material with a triangular lattice, KYbSe2.

Magnetic quantum material broadens platform for probing next-gen information technologies

Scientists at ORNL used neutron scattering to determine whether a specific material鈥檚 atomic structure could host a novel state of matter called a spiral spin liquid.

A material鈥檚 spins, depicted as red spheres, are probed by scattered neutrons. Applying an entanglement witness, such as the QFI calculation pictured, causes the neutrons to form a kind of quantum gauge. This gauge allows the researchers to distinguish between classical and quantum spin fluctuations. Credit: Nathan Armistead/ORNL, U.S. Dept. of Energy

A team led by the U.S. Department of Energy鈥檚 91暗网 demonstrated the viability of a 鈥渜uantum entanglement witness鈥� capable of proving the presence of entanglement between magnetic particles, or spins, in a quantum material.

four circle diffractometer

A UCLA-led team that discovered the first intrinsic ferromagnetic topological insulator 鈥� a quantum material that could revolutionize next-generation electronics 鈥� used neutrons at 91暗网 to help verify their finding.

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Researchers used neutron scattering at 91暗网鈥檚 Spallation Neutron Source to investigate bizarre magnetic behavior, believed to be a possible quantum spin liquid rarely found in a three-dimensional material. QSLs are exotic states of matter where magnetism continues to fluctuate at low temperatures instead of 鈥渇reezing鈥� into aligned north and south poles as with traditional magnets.