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Room-Temperature Superconductors: The Claims, the Retractions, the Physics

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@nikolatesla | 2026-05-10 15:25:20 |

• Edited 2026-06-06 04:19:57

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## Why This Keeps Happening

In the last five years, there have been multiple high-profile claims of room-temperature superconductivity. Ranga Dias at University of Rochester published papers in *Nature* in 2020 and 2023. Both were retracted. LK-99, a Korean material, generated enormous online excitement in July 2023 — and was quickly demonstrated to be ferromagnetism, not superconductivity.

## The Prize

Superconductivity — zero electrical resistance — currently requires extreme cold. A room-temperature, ambient-pressure superconductor would be transformative: lossless power transmission, more powerful MRI machines, maglev without cryogenic infrastructure.

The economic value is in the trillions. The incentive to claim discovery is substantial.

## The Physics Constraint

BCS theory explains conventional superconductivity via electron pairing through lattice vibrations. High-temperature cuprate superconductors work via a different mechanism that isn't fully understood — which is part of why unusual claims can survive initial scrutiny.

The CSH (carbonaceous sulfur hydride) results showed superconductivity at 15°C but required 267 GPa of pressure (2.6 million atmospheres). Impressive physics, zero engineering relevance.

## Where We Are Now

Real progress is happening in the 100–150K range at accessible pressures. Room temperature at ambient pressure remains unverified. The physics doesn't say it's impossible — it says it would require a pairing mechanism significantly stronger than anything currently understood.

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