{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:KYSKCWOWOBZRJ43TK37D7IS3NO","short_pith_number":"pith:KYSKCWOW","schema_version":"1.0","canonical_sha256":"5624a159d6707314f37356fe3fa25b6ba078fbc28512c66438adea3162f9cf55","source":{"kind":"arxiv","id":"1909.07427","version":2},"attestation_state":"computed","paper":{"title":"Effective Hamiltonian for superconducting Ni oxides Nd$_{1-x}$Sr$_x$NiO$_2$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.supr-con","authors_text":"Bin Xi, Fei Ye, Hu Zhang, Jia-Wei Mei, Lipeng Jin, Shanmin Wang, Xingqiang Shi","submitted_at":"2019-09-16T18:24:22Z","abstract_excerpt":"We derive the effective single-band Hamiltonian in the flat NiO$_2$ planes for nickelate compounds Nd$_{1-x}$Sr$_x$NiO$_2$. We first implement the first-principles calculation to study electronic structures of nickelates using the Heyd-Scuseria-Ernzerhof hybrid density functional and derive a three-band Hubbard model for Ni-O $pd\\sigma$ bands of Ni$^+$ $3d_{x^2-y^2}$ and O$^{2-}$ $2p_{x/y}$ orbitals in the NiO$_2$ planes. To obtain the effective one-band $t$-$t'$-$J$ model Hamiltonian, we perform the exact diagonalization of the three-band Hubbard model for the Ni$_5$O$_{16}$ cluster and map t"},"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":"1909.07427","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2019-09-16T18:24:22Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"67fb62b4425ba6dfa6c1d661af1b814f4ca4d4ba54739b4e04c857fec782026e","abstract_canon_sha256":"8bae14a41301d51a3a9d825610607d3b2a7cb587faf2c5ca3f7d52b8ee9cda2d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:45:10.285139Z","signature_b64":"9qe9B9TFHfhWCi52YOyCtoKG6cqoZEPBTtKSF2e684I/f19UQnpL4HZrwLhtXaAZA+3pmQ7mYASkVUInat8xCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5624a159d6707314f37356fe3fa25b6ba078fbc28512c66438adea3162f9cf55","last_reissued_at":"2026-07-05T00:45:10.284728Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:45:10.284728Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Effective Hamiltonian for superconducting Ni oxides Nd$_{1-x}$Sr$_x$NiO$_2$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.supr-con","authors_text":"Bin Xi, Fei Ye, Hu Zhang, Jia-Wei Mei, Lipeng Jin, Shanmin Wang, Xingqiang Shi","submitted_at":"2019-09-16T18:24:22Z","abstract_excerpt":"We derive the effective single-band Hamiltonian in the flat NiO$_2$ planes for nickelate compounds Nd$_{1-x}$Sr$_x$NiO$_2$. We first implement the first-principles calculation to study electronic structures of nickelates using the Heyd-Scuseria-Ernzerhof hybrid density functional and derive a three-band Hubbard model for Ni-O $pd\\sigma$ bands of Ni$^+$ $3d_{x^2-y^2}$ and O$^{2-}$ $2p_{x/y}$ orbitals in the NiO$_2$ planes. To obtain the effective one-band $t$-$t'$-$J$ model Hamiltonian, we perform the exact diagonalization of the three-band Hubbard model for the Ni$_5$O$_{16}$ cluster and map t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1909.07427","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/1909.07427/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":"1909.07427","created_at":"2026-07-05T00:45:10.284790+00:00"},{"alias_kind":"arxiv_version","alias_value":"1909.07427v2","created_at":"2026-07-05T00:45:10.284790+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1909.07427","created_at":"2026-07-05T00:45:10.284790+00:00"},{"alias_kind":"pith_short_12","alias_value":"KYSKCWOWOBZR","created_at":"2026-07-05T00:45:10.284790+00:00"},{"alias_kind":"pith_short_16","alias_value":"KYSKCWOWOBZRJ43T","created_at":"2026-07-05T00:45:10.284790+00:00"},{"alias_kind":"pith_short_8","alias_value":"KYSKCWOW","created_at":"2026-07-05T00:45:10.284790+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/KYSKCWOWOBZRJ43TK37D7IS3NO","json":"https://pith.science/pith/KYSKCWOWOBZRJ43TK37D7IS3NO.json","graph_json":"https://pith.science/api/pith-number/KYSKCWOWOBZRJ43TK37D7IS3NO/graph.json","events_json":"https://pith.science/api/pith-number/KYSKCWOWOBZRJ43TK37D7IS3NO/events.json","paper":"https://pith.science/paper/KYSKCWOW"},"agent_actions":{"view_html":"https://pith.science/pith/KYSKCWOWOBZRJ43TK37D7IS3NO","download_json":"https://pith.science/pith/KYSKCWOWOBZRJ43TK37D7IS3NO.json","view_paper":"https://pith.science/paper/KYSKCWOW","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1909.07427&json=true","fetch_graph":"https://pith.science/api/pith-number/KYSKCWOWOBZRJ43TK37D7IS3NO/graph.json","fetch_events":"https://pith.science/api/pith-number/KYSKCWOWOBZRJ43TK37D7IS3NO/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/KYSKCWOWOBZRJ43TK37D7IS3NO/action/timestamp_anchor","attest_storage":"https://pith.science/pith/KYSKCWOWOBZRJ43TK37D7IS3NO/action/storage_attestation","attest_author":"https://pith.science/pith/KYSKCWOWOBZRJ43TK37D7IS3NO/action/author_attestation","sign_citation":"https://pith.science/pith/KYSKCWOWOBZRJ43TK37D7IS3NO/action/citation_signature","submit_replication":"https://pith.science/pith/KYSKCWOWOBZRJ43TK37D7IS3NO/action/replication_record"}},"created_at":"2026-07-05T00:45:10.284790+00:00","updated_at":"2026-07-05T00:45:10.284790+00:00"}