{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2023:YZVTCSWCVVSGHJARKRY3SOEKMB","short_pith_number":"pith:YZVTCSWC","schema_version":"1.0","canonical_sha256":"c66b314ac2ad6463a4115471b9388a604e7adb019dcdd3f9ddc07803259b1d3e","source":{"kind":"arxiv","id":"2308.01176","version":2},"attestation_state":"computed","paper":{"title":"Inter-layer valence bonds and two-component theory for high-$T_c$ superconductivity of La$_{3}$Ni$_{2}$O$_{7}$ under pressure","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.supr-con","authors_text":"Fu-Chun Zhang, Guang-Ming Zhang, Yi-feng Yang","submitted_at":"2023-08-02T14:34:46Z","abstract_excerpt":"The recent discovery of high-$T_{c}$ superconductivity in bilayer nickelate La$_{3}$Ni$_{2}$O$_{7}$ under high pressure has stimulated great interest concerning its pairing mechanism. We argue that the weak coupling model from the almost fully-filled $d_{z^{2}}$ bonding band cannot give rise to its high $T_{c}$, and thus propose a strong coupling model based on local inter-layer spin singlets of Ni-$d_{z^{2}}$ electrons due to their strong on-site Coulomb repulsion. This leads to a minimal effective model that contains local pairing of $d_{z^{2}}$ electrons and a considerable hybridization wit"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2308.01176","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2023-08-02T14:34:46Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"ffa159eb3a8369284eb2fa80d9b5f9b5f756cc70a8bbf6394b138661a980670b","abstract_canon_sha256":"5e96fb517065df4be361d7dab6d1e1ee948ee1101d17d0093fb9203c7a98ed84"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:12:17.769544Z","signature_b64":"SgC25WsnW74N6Q6yH55oEok8WmsP76tOVSDHw22kE65xO++WkcQ4DR0k1qN+3b36Xmoi4LhYva+aSWGV795xAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c66b314ac2ad6463a4115471b9388a604e7adb019dcdd3f9ddc07803259b1d3e","last_reissued_at":"2026-07-05T07:12:17.769046Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:12:17.769046Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Inter-layer valence bonds and two-component theory for high-$T_c$ superconductivity of La$_{3}$Ni$_{2}$O$_{7}$ under pressure","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.supr-con","authors_text":"Fu-Chun Zhang, Guang-Ming Zhang, Yi-feng Yang","submitted_at":"2023-08-02T14:34:46Z","abstract_excerpt":"The recent discovery of high-$T_{c}$ superconductivity in bilayer nickelate La$_{3}$Ni$_{2}$O$_{7}$ under high pressure has stimulated great interest concerning its pairing mechanism. We argue that the weak coupling model from the almost fully-filled $d_{z^{2}}$ bonding band cannot give rise to its high $T_{c}$, and thus propose a strong coupling model based on local inter-layer spin singlets of Ni-$d_{z^{2}}$ electrons due to their strong on-site Coulomb repulsion. This leads to a minimal effective model that contains local pairing of $d_{z^{2}}$ electrons and a considerable hybridization wit"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.01176","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2308.01176/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"2308.01176","created_at":"2026-07-05T07:12:17.769109+00:00"},{"alias_kind":"arxiv_version","alias_value":"2308.01176v2","created_at":"2026-07-05T07:12:17.769109+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.01176","created_at":"2026-07-05T07:12:17.769109+00:00"},{"alias_kind":"pith_short_12","alias_value":"YZVTCSWCVVSG","created_at":"2026-07-05T07:12:17.769109+00:00"},{"alias_kind":"pith_short_16","alias_value":"YZVTCSWCVVSGHJAR","created_at":"2026-07-05T07:12:17.769109+00:00"},{"alias_kind":"pith_short_8","alias_value":"YZVTCSWC","created_at":"2026-07-05T07:12:17.769109+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2412.21150","citing_title":"Pressure-tunable structural instabilities in single-layer-trilayer La$_3$Ni$_2$O$_7$","ref_index":37,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/YZVTCSWCVVSGHJARKRY3SOEKMB","json":"https://pith.science/pith/YZVTCSWCVVSGHJARKRY3SOEKMB.json","graph_json":"https://pith.science/api/pith-number/YZVTCSWCVVSGHJARKRY3SOEKMB/graph.json","events_json":"https://pith.science/api/pith-number/YZVTCSWCVVSGHJARKRY3SOEKMB/events.json","paper":"https://pith.science/paper/YZVTCSWC"},"agent_actions":{"view_html":"https://pith.science/pith/YZVTCSWCVVSGHJARKRY3SOEKMB","download_json":"https://pith.science/pith/YZVTCSWCVVSGHJARKRY3SOEKMB.json","view_paper":"https://pith.science/paper/YZVTCSWC","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2308.01176&json=true","fetch_graph":"https://pith.science/api/pith-number/YZVTCSWCVVSGHJARKRY3SOEKMB/graph.json","fetch_events":"https://pith.science/api/pith-number/YZVTCSWCVVSGHJARKRY3SOEKMB/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/YZVTCSWCVVSGHJARKRY3SOEKMB/action/timestamp_anchor","attest_storage":"https://pith.science/pith/YZVTCSWCVVSGHJARKRY3SOEKMB/action/storage_attestation","attest_author":"https://pith.science/pith/YZVTCSWCVVSGHJARKRY3SOEKMB/action/author_attestation","sign_citation":"https://pith.science/pith/YZVTCSWCVVSGHJARKRY3SOEKMB/action/citation_signature","submit_replication":"https://pith.science/pith/YZVTCSWCVVSGHJARKRY3SOEKMB/action/replication_record"}},"created_at":"2026-07-05T07:12:17.769109+00:00","updated_at":"2026-07-05T07:12:17.769109+00:00"}