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Looking for elusive quantum particles? Try a bad metal, researchers suggest

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91% Informative

Bad metals make for poor electrical conductors, but they make good quantum materials.

In so-called "bad metals," electrons hit unexpected resistance: each other.

Researchers at Columbia University observed unusual optical properties in the bad metal molybdenum oxide dichloride (MoOCl2) They found quasiparticles known as hyperbolic plasmon polaritons in the material.

More information: Francesco L. Ruta et al, Good plasmons in a bad metal, Science ( 2025 ). DOI: 10.1126 /science.adr5926 Journal information: Science Provided by Columbia University Quantum Initiative .