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[SCI-Idea] Room-Temperature Superconductivity

Room-temperature superconductivity — a material conducting electricity with zero resistance at or near ambient conditions — would be the most transformative materials discovery in the history of physics, eliminating the cryogenic infrastructure that currently limits superconducting technology to specialised applications.

Overview

Conventional superconductors require liquid-helium cooling (4 K). High-Tc cuprates (Bednorz & Müller 1986) raised the bar to ~135 K. Hydrogen-rich compounds under extreme pressure now show Tc ~250 K (LaH₁₀ at 250 GPa, Drozdov et al. 2019; CSH at 288 K under 267 GPa). The grand challenge is achieving superconductivity at ambient pressure and room temperature. If achieved, it would immediately enable: lossless global power transmission (USD 300B/year is lost to resistive heating in today's grids), compact fusion reactor magnets without cryostats, room-temperature quantum computers, and high-speed magnetic levitation transport without refrigeration.

AI-guided materials discovery is accelerating the search: Google DeepMind's GNoME (2023) predicted 380,000 stable new crystal structures. The LK-99 episode (2023 South Korean claim, quickly refuted) demonstrated the global excitement and the rigour required to confirm such a discovery.

Current State

  • Pressure hydrides: Tc ~250–288 K confirmed, but require multi-megabar pressures (extreme diamonds)
  • Ambient-pressure candidates: no confirmed RT-SC at ambient pressure; multiple disputed claims
  • AI materials search: increasingly targeting metastable high-Tc compounds synthesisable without extreme pressure
  • Key labs: Mikhail Eremets (Max Planck Mainz), Ranga Dias (Rochester, claims disputed), Georg Hirsch (UCSB theory), Google DeepMind (GNoME), MIT (Checkelsky group)

Economic Potential

Lossless power transmission alone: USD 300B+/year in recovered electricity losses. Enabling compact fusion reactors (no helium cooling): USD 3.5T/year electricity market addressable. Room-temperature superconducting quantum computers: accelerating USD 100B+ QC market by a decade. Magnetic levitation transport: USD 500B+/year infrastructure. Combined economic impact rivals any prior materials discovery.

Discovery Character

Surprise level: Extreme — despite 60 years of systematic search, no consensus material exists. A genuine ambient-pressure RT-SC would be immediately verifiable worldwide and would trigger the most rapid Nobel Prize in history.

Mode: Systematic-AI-assisted, with serendipity possible at any moment. History shows that superconductivity breakthroughs (Onnes 1911, Bednorz-Müller 1987, LaH₁₀ 2019) have each arrived from unexpected material classes. AI-guided synthesis may produce a candidate from a class nobody had considered.

What This Enables

  • [TECH-Idea] Fusion Power Plants — room-temperature superconducting magnets would eliminate the cryogenic systems that dominate fusion reactor complexity and cost.
  • [TECH-Idea] Quantum Internet & Quantum Cryptography — room-temperature superconducting quantum repeaters would make a global quantum network feasible without dilution refrigerators at every node.