🔬 Discovery

Iron-based superconductors above 50 K

Superconductores de hierro por encima de 50 K

Date
2008 · confidence high
Place
Institute of Physics (CAS), Beijing, China
Credited to
Zhao Zhongxian and Ren Zhian (Beijing); Chen Xianhui (Hefei)
People
👤 Chen Xianhui1963–👤 Zhao Zhongxian1941–
Field
Cosmos & Earth

⚠️ Disputed: the sources disagree.

What was discovered

Weeks after the Japanese discovery, Chinese groups raised the critical temperature of iron pnictides to 43 K and then to 55 K. They established a second family of high-temperature superconductors after the cuprates.

Superconductivity in LaFeAsO:F was discovered by Hideo Hosono (Tokyo, February 2008, 26 K).

What it led to

  • new family of unconventional superconductors
  • study of magnetism and superconductivity
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Sources✓ verified 2026-09-25