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Kagome Metal ScV6Sn6 Shows Rare-Earth Driven CDW

AerospaceOct 1, 2025

William Meier, assistant professor of materials science at FAMU–FSU, will present new results showing that a charge-density-wave (CDW) in the kagome metal ScV6Sn6 is controlled by rare-earth substitution.
Researchers found ScV6Sn6 is unique among its family in developing a low-temperature CDW. By replacing scandium with other rare-earth elements and measuring structural and electronic responses, Meier's team traced CDW stability to the ionic size of the substituted element.
That insight led to a simple predictive model identifying which related kagome metals are likely to host CDWs. The work combines single-crystal growth, chemical substitution, x-ray and neutron scattering, and physical characterization to link atomic-scale lattice changes to emergent electronic order.
Meier will discuss how the model has guided subsequent discoveries and highlighted unusual behaviors in kagome metals that could inform future quantum-materials design.
Seminar: Friday, October 3, 2025, 11:00 AM–12:00 PM, AME 106. Speaker background: synthesis and scattering studies of unconventional metals and magnetic materials.

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