High-temperature superconductivity
Some materials carry current with zero loss — and we still can't explain why.
What makes this fascinating
Resistance-free, surprisingly warm — Some ceramics carry current with zero loss above 130 K — far hotter than theory said was possible.
BCS theory can't explain it — The mechanism behind conventional superconductors simply doesn't account for these materials.
The room-temperature dream — A superconductor working at everyday temperatures would transform power grids, transit, and computing.
Frequently asked questions
- What is high-temperature superconductivity?
- Superconductivity is electric current flowing with zero resistance. 'High-temperature' superconductors achieve it far warmer than expected — though still cold — and we do not fully understand why.
- Why can't we explain high-temperature superconductors?
- The standard BCS theory explains conventional superconductors but fails for the copper- and iron-based 'high-Tc' materials, whose mechanism remains unsolved.
- Could we get a room-temperature superconductor?
- That is the dream — it would transform power grids and electronics. Some claims exist, often under extreme pressure, but a practical, reproducible room-temperature superconductor has not been achieved.
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