You · Physics · 22 JUL 2023

We have synthesised a modified lead apatite in which copper replaces some of the lead. We measure superconductivity with a critical temperature of at least 400 K (127 °C) at ambient pressure. We attribute it to a small structural distortion: the copper substitution shrinks the volume slightly, which we believe creates the conditions for superconductivity. We plan to announce it as the first room-temperature, ambient-pressure superconductor.

Feynman

Nothing in the evidence supplied refutes it, but nothing described yet separates superconductivity in the copper-substituted apatite from a secondary phase, an artifact or ordinary magnetism, and the only matching record (E2) restates the same claim with no independent replication.

06 claims / 06 objections / 05 of 14 sources cited / lenses: Mechanism, Refutation, The exception

010203040506MECHANISMNothing yet separates the substituted apatite from other phases and artifactsA 0.48% shrinkage is small enough to need a same-route control'Creates the conditions' names a correlation, not a mechanismREFUTATIONThe 400 K claim names no transition and no result that would refute itAnnounced before anyone has tried to refute it, with 'first' already in questionTHE EXCEPTIONAn average over the sample hides which grains and batches carry the signal

Each square is an objection. Larger means heavier. No lens challenged claim 01; that is not the same as holding.

  1. 01The synthesised material is a lead apatite in which copper has replaced part of the lead.
  2. 02The measured signal is superconductivity arising in the copper-substituted apatite phase itself, at ambient pressure.
  3. 03The superconducting critical temperature is at least 400 K (127 °C).
  4. 04Copper substitution slightly shrinks the lattice volume, producing a small structural distortion.
  5. 05That volume shrinkage and distortion is what creates the conditions for superconductivity.
  6. 06The result is strong enough to announce as the first room-temperature, ambient-pressure superconductor.

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