{"slug":"hydride-superconductors","topic":"hydride-superconductors","title":"Superconducting Hydrides Under Pressure: State of the Field (October 2026)","summary":"Covers hydrogen-rich superconductors stabilized at megabar pressures, including H3S, LaH10, yttrium, calcium and ternary superhydrides, the diamond-anvil measurement methods they depend on, and the reproducibility failures behind the retraction of two earlier room-temperature-era reports, in 2022 and 2023. The main takeaway: the best-established experimental critical temperatures cluster near 200 to 250 K, while the 2025 near-room-temperature La-Sc-H preprint remains unconfirmed and ambient-pressure hydride superconductivity remains calculated in the literature checked.","version":1,"published_at":"2026-10-30","updated_at":"2026-10-30","stats":{"words":3770,"citations":34,"claims":29,"timeline":20,"benchmarks":15,"open_problems":6,"key_papers":15,"glossary":14},"verification":{"status":"verified","method":"independent AI fact-check against cited sources (evidence pack + web checks); automated citation resolution","claims_checked":29,"issues_fixed":20,"verified_at":"2026-10-30"},"ai_assisted":true,"price":{"usd":"0.20","protocol":"x402","network":"eip155:84532","asset":"USDC"},"url":"https://space-kitty.com/dossiers/hydride-superconductors","preview_url":"https://space-kitty.com/api/v1/dossiers/hydride-superconductors/preview","purchase_url":"https://space-kitty.com/api/v1/dossiers/hydride-superconductors","toc":[{"level":2,"text":"Executive summary","anchor":"executive-summary"},{"level":2,"text":"Background and core concepts","anchor":"background-and-core-concepts"},{"level":2,"text":"Timeline of key milestones","anchor":"timeline-of-key-milestones"},{"level":2,"text":"State of the art","anchor":"state-of-the-art"},{"level":3,"text":"Sulfur and lanthanum hydrides","anchor":"sulfur-and-lanthanum-hydrides"},{"level":3,"text":"Yttrium, calcium, cerium and related superhydrides","anchor":"yttrium-calcium-cerium-and-related-superhydrides"},{"level":3,"text":"Ternary systems and the 2025 La-Sc-H claim","anchor":"ternary-systems-and-the-2025-la-sc-h-claim"},{"level":3,"text":"Lower-pressure routes and new chemistries","anchor":"lower-pressure-routes-and-new-chemistries"},{"level":3,"text":"Quantitative benchmarks","anchor":"quantitative-benchmarks"},{"level":2,"text":"Open problems and active debates","anchor":"open-problems-and-active-debates"},{"level":3,"text":"Reproducibility of room-temperature claims","anchor":"reproducibility-of-room-temperature-claims"},{"level":3,"text":"Measurement limits at megabar pressure","anchor":"measurement-limits-at-megabar-pressure"},{"level":3,"text":"Theory versus experiment","anchor":"theory-versus-experiment"},{"level":3,"text":"Coulomb pseudopotential and anharmonic corrections","anchor":"coulomb-pseudopotential-and-anharmonic-corrections"},{"level":3,"text":"Lutetium hydrides","anchor":"lutetium-hydrides"},{"level":3,"text":"The La-Sc-H claim","anchor":"the-la-sc-h-claim"},{"level":3,"text":"Ambient-pressure route","anchor":"ambient-pressure-route"},{"level":2,"text":"Major programs and players","anchor":"major-programs-and-players"},{"level":2,"text":"Outlook: what to watch (next 12-18 months)","anchor":"outlook-what-to-watch-next-12-18-months"},{"level":2,"text":"Key papers","anchor":"key-papers"},{"level":2,"text":"Glossary","anchor":"glossary"}],"sample_claims":["The sulfur hydride H3S reached a critical temperature of 203 K at about 155 GPa, the first high-Tc benchmark of the modern hydride program.","LaH10 reached a critical temperature of about 250 K, the binary benchmark used in this dossier."],"includes":["markdown","claims","timeline","benchmarks","open_problems","key_papers","glossary","bibliography"],"citation_count":34,"how_to_buy":"GET https://space-kitty.com/api/v1/dossiers/hydride-superconductors with an x402 client ($0.20, USDC on Base Sepolia (testnet))."}