{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.topic/1","content_sha256":"2ea1615385189f976ac8c7b51af19a1f817d1fd39aabc6b536e2582e01286f59","created":"2026-10-03T07:17:51Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":[],"salt":"bb4962f92478cd9dae5594c1034e37becf89ea213f97b830410b3fc103230240","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"topic"},"content":{"external_id":"cm.hydrides","field":"cm","n":"1","review_cite":"A. P. Drozdov, M. I. Eremets, I. A. Troyan, V. Ksenofontov, S. I. Shylin, Conventional superconductivity at 203 kelvin at high pressures in the sulfur hydride system, Nature, 2015","review_link":"https://doi.org/10.1038/nature14964","review_verified":"true","summary":"Hydrogen-rich compounds squeezed to more than a million atmospheres in diamond anvil cells superconduct near 200 to 250 K, with one unreplicated 2025 report near 298 K. Pure hydrogen is predicted to become a metal, and possibly a room-temperature superconductor, at still higher pressure.","title":"Superconducting hydrides and metallic hydrogen at megabar pressures","topic_ref":null,"why":"They are the highest-$T_{\\mathrm{c}}$ superconductors known and test whether conventional phonon-mediated theory predicts $T_{\\mathrm{c}}$ from first principles."},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"d8f6a90ffa2d9797ae166bd4e51b07a319dd484720f9647530fc1647474424b6","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"580945801caf603ccba3239781230456db81cfd623d17461ee869e1f34161289","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"k0MnK2hIlTVEnNU3DI5hdiuT-k71ofIfT9yXSWT_YCNgbPLVx96DxECXzSLiyxxdR0-ibzwlgvq4XP93-KhbAg"},"schema":"pubphys.envelope/1"},"record_hash":"d8f6a90ffa2d9797ae166bd4e51b07a319dd484720f9647530fc1647474424b6","leaf_index":143}