Scientists discover first type I superconductor that breaks time-reversal symmetry
Researchers have identified a type I superconductor, YbSb2, that exhibits time-reversal symmetry breaking, a property previously thought to exist only in type II superconductors. By cooling the material to near absolute zero and using muon probes, scientists confirmed its unique magnetic behavior.
Why it matters
This discovery challenges existing theories in condensed matter physics and could lead to new advancements in quantum materials and superconducting technology.
edited by Gaby Clark , reviewed by Robert Egan
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Add as preferred source Sample characterization and electronic band structure of YbSb 2 . Credit: Physical Review Letters (2026). DOI: 10.1103/drzq-lfn5 Superconductors are materials that conduct electricity with no resistance and expel magnetic fields when cooled to ultralow temperatures. And depending on their quantum structure, they can also showcase strange properties like magnetic levitation. But now things are getting a little weirder.
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