{"record":{"author":{"account_ref":null,"orcid":null},"builds_on":[],"content_schema":"pubphys.content.revision/1","content_sha256":"ba2df655447e28686471ccae2de9c57388864cbb0f8a6faba3ba56b5f24bc0a2","created":"2026-10-15T23:43:22Z","files":[],"origin":{"assisted_by":["ai:gpt-5.5"],"kind":"seed"},"parents":["1f1cdf9130b4f02912f9ac1aadbd10c2f51d4d3acbacda170fcbc080c3235748","ce59fb6cd812fc05906d0c60a71c75ea22bc686bcf38e7c3ef7010834d98ee7b"],"salt":"1c40c0f13f00a90f9be3019faf36086b7daaa34d623a30a078d3bd115ea8f4c2","schema":"pubphys.record/2","site":"pubphys.com","target":null,"type":"revision"},"content":{"answer_type":"mechanism","assisted_by":["ai:gpt-5.5"],"external_id":"cm.cuprates.pairing-mechanism","kind":"phenomenon","literature_status":"contested","n":"2","parents":[],"plain":"In a superconductor electrons form pairs (Cooper pairs) that move without resistance; in ordinary metals lattice vibrations supply the attraction, but in cuprates the source of the attraction is not agreed upon.","posed_since":"1987","precise":"Identify the dominant pairing interaction behind $d_{(x^{2}-y^{2})}$ superconductivity in hole-doped $\\mathrm{CuO_2}$ planes (candidates: antiferromagnetic superexchange $J \\sim 0.13\\ \\mathrm{eV}$ and spin fluctuations, charge-transfer fluctuations, phonons, or a combination). An answer is a microscopic mechanism that predicts $T_c(p)$ and the gap magnitude across cuprate families within a factor of order one and passes material-specific tests (isotope effect, pressure dependence, family dependence of $T_c,\\mathrm{max}$).","problem_ref":"1f1cdf9130b4f02912f9ac1aadbd10c2f51d4d3acbacda170fcbc080c3235748","references":"","settled_by":"A controlled calculation from a materials-specific model that reproduces $T_{\\mathrm{c}}(p)$ in several families, together with spectroscopy showing that the identified boson spectrum accounts for the measured gap function.","status_note":"","title":"What interaction binds electrons into pairs in the cuprates?","topic_ref":null},"attested":{"attestation":{"batch":null,"client_id":null,"id_token_sha256":null,"kind":"platform"},"record_hash":"f618a16f397cb6f79b819a4cf1114968e41289254fcad66b258730bdf208c0c4","schema":"pubphys.attested/1"},"envelope":{"attested_hash":"f31501fed2d295b38a499ad9c94098da2824c87eae06dd25a29fa92401d91566","platform_signature":{"key_id":"c6afc19b31429869751f06879c75cd64ea92654423d15b44be775bf1310a60da","sig":"NqR5TFn-nuCme6u8xY2EvNSPcpuMqhlRsBjUPKSqQ_9RmN4jIkeiXX2Fg2FJOTD2DIanPPws-zbZcXFF_LJXAw"},"schema":"pubphys.envelope/1"},"record_hash":"f618a16f397cb6f79b819a4cf1114968e41289254fcad66b258730bdf208c0c4","leaf_index":2734}