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Superconductivity

Superconductivity

Heavy fermions appear in a layered intermetallic crystal

08 Feb 2024 Isabelle Dumé
Brightly-coloured cartoon showing interactions between electrons and magnetic spins as a ball-and-arrows model
Heavy fermions: In materials like CeSiI, interactions between electrons and magnetic spins give the electrons a heavier-than-usual effective mass. In addition to being a heavy fermion, CeSiI is a van der Waals crystal that can be peeled into atomically-thin layers. (Courtesy: Nicoletta Barolini, Columbia University)
Electrons are normally among the lightest fundamental particles, but in so-called “heavy fermionâ€

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Isabelle Dumé is a contributing editor to Physics World
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