{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.topic/1","content_sha256":"eb4c190a0f9653e917a8c63574d4eb2aa5c7646de906211a4be9ad06bbf41eb7","created":"2026-10-03T07:17:51Z","files":[],"origin":{"assisted_by":[],"kind":"seed"},"parents":[],"salt":"4dbce8acdf2afeb9f2bf73c5acad939e6c03b354c8c07df5a9dbc37c4bc924f4","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"topic"},"content":{"external_id":"cm.sr2ruo4","field":"cm","n":"1","review_cite":"A. P. Mackenzie, T. Scaffidi, C. W. Hicks, Y. Maeno, Even odder after twenty-three years: the superconducting order parameter puzzle of Sr2RuO4, npj Quantum Materials, 2017","review_link":"https://doi.org/10.1038/s41535-017-0045-4","review_verified":"true","summary":"Strontium ruthenate is an exceptionally clean layered oxide that superconducts below 1.5 K; for two decades it was thought to pair electrons with parallel spins, until a 2019 measurement overturned the main evidence. No proposed pairing state now fits all the data.","title":"Order parameter of the superconductor Sr2RuO4","topic_ref":null,"why":"It is the cleanest test of whether experiment can determine an unconventional superconductor's order parameter, and the answer constrains theories of multiorbital pairing."},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"4f61e38da4787d938d64771ba627f52a028683729b3f0c7ab15eb99d384306be","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"88a965c24abc056bd63fb9a879422d0afee8b1c311bcb02f42d76361aec847d1","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"C0xMRtaQEvTOS43kSxA0LbPFhXMojDSgnsx_emGqWxlmJRTWJtYcJSU_vDz7MSSOvPhk0ISIXVHLzLkj-x4qBg"},"schema":"pubphys.envelope/1"},"record_hash":"4f61e38da4787d938d64771ba627f52a028683729b3f0c7ab15eb99d384306be","leaf_index":173}