Evidence of 'ghost' superconductivity found in uranium ditelluride

· Science

Physicists report striking evidence of an unusual form of superconducting behavior in uranium ditelluride, a material already known for unconventional superconductivity. In the finding, electron pairs organize into rippling patterns called pair density waves. Even more surprisingly, the report says these patterns appear to survive after ordinary superconductivity disappears, suggesting the electron pairing leaves a trace behind. The result is an experimental observation published in the research literature and points to physics beyond the standard picture of how superconductivity breaks down. Understanding such states could inform the search for materials that conduct electricity without resistance at practical temperatures, a long-standing goal in condensed matter physics.

Why it matters：If electron pairing persists after superconductivity vanishes, theorists may need to rethink how these states form and break down.

Key points

  • Uranium ditelluride shows rippling pair density wave patterns.
  • The patterns seem to survive after ordinary superconductivity disappears.
  • The finding adds to uranium ditelluride's record of unconventional behavior.

Sources (original reporting)

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