What this work contributes
Compares superconducting niobium and copper in an equivalence-principle test.
Where the evidence stops
Composition and state population matter; this is not a generic constraint on a graphene gate.
Keep the conditions with the result
- Conditions
- Reported 95% eta bound 2.0e-9 for niobium versus copper; 9.2e-4 for the Cooper-pair interpretation.
- Design use
- Map the tested composition and observable before translating a bound.
- Review access
- Author-repository abstract and version metadata inspected; not full-text review.
- Publication
- arXiv:2407.21232, author preprint
- DOI
- 10.48550/arXiv.2407.21232
Original source
M. P. Ross et al.. Test of the Equivalence Principle for Superconductors. arXiv:2407.21232, author preprint (2024).
DOI: 10.48550/arXiv.2407.21232
How we use it
This record belongs to Conservation. Its evidence label describes the cited work, not the maturity of a Metric Flight device. Follow the original methods, corrections and conditions before transferring a result to a different geometry or scale.
Editorial note reviewed 19 October 2026. AI assisted research discovery and synthesis. Citation metadata and claims were checked against primary publication or institutional records; full-text access varies. Read the source for the complete method.