{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:JAS5XGAF3R2IVAW2EKWU3UEZEW","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"df1d59b8525f0f7e86fc619edf455850f104d9390c744b690a0de16c528ea9c4","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2012-10-04T08:11:01Z","title_canon_sha256":"72567a5ce19768fecb37452d791df384db0550365c4c0112d6bf7cc734a6e60e"},"schema_version":"1.0","source":{"id":"1210.1324","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.1324","created_at":"2026-05-18T01:54:05Z"},{"alias_kind":"arxiv_version","alias_value":"1210.1324v1","created_at":"2026-05-18T01:54:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.1324","created_at":"2026-05-18T01:54:05Z"},{"alias_kind":"pith_short_12","alias_value":"JAS5XGAF3R2I","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_16","alias_value":"JAS5XGAF3R2IVAW2","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_8","alias_value":"JAS5XGAF","created_at":"2026-05-18T12:27:11Z"}],"graph_snapshots":[{"event_id":"sha256:00cb180698bd2f629d8ba2e4ea865d58d45cd18d7f7a0dd0c991438364b911c7","target":"graph","created_at":"2026-05-18T01:54:05Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"Motivated by superconductivity (SC) in layered nitrides, we study an ionic-Hubbard model on a honeycomb lattice, which consists of two sublattices with an energy-level offset, by using an optimization variational Monte Carlo method. Parameter values for the Coulomb interaction and the energy-level offset, to realize a band insulator in non-doped state, are evaluated, and the SC state is investigated in a carrier-doped band insulator. It is found that, in a weakly doped band insulator, spin fluctuation remains and the spin-singlet d-wave SC state is realized. Present results support an unconven","authors_text":"Sumio Ishihara, Tsutomu Watanabe","cross_cats":["cond-mat.str-el"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2012-10-04T08:11:01Z","title":"Band and Mott Insulators and Superconductivity in Honeycomb-Lattice Ionic-Hubbard Model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.1324","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:b25845a00a156bfcfbce0322c04211b4cddbf779fcc9fdb485a495474e5fc60c","target":"record","created_at":"2026-05-18T01:54:05Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"df1d59b8525f0f7e86fc619edf455850f104d9390c744b690a0de16c528ea9c4","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2012-10-04T08:11:01Z","title_canon_sha256":"72567a5ce19768fecb37452d791df384db0550365c4c0112d6bf7cc734a6e60e"},"schema_version":"1.0","source":{"id":"1210.1324","kind":"arxiv","version":1}},"canonical_sha256":"4825db9805dc748a82da22ad4dd09925b4f388a3a4d0143468a7d05a2d10bc59","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4825db9805dc748a82da22ad4dd09925b4f388a3a4d0143468a7d05a2d10bc59","first_computed_at":"2026-05-18T01:54:05.955148Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:54:05.955148Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"W0mWgMDExJq6xruDzudSlwpSq8jpMXIamQ7ef/u9r4UU/cAZUOE4QUa/7E9YbyLfZEFrdddVFH4rEPQVdfe/Cw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:54:05.955672Z","signed_message":"canonical_sha256_bytes"},"source_id":"1210.1324","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b25845a00a156bfcfbce0322c04211b4cddbf779fcc9fdb485a495474e5fc60c","sha256:00cb180698bd2f629d8ba2e4ea865d58d45cd18d7f7a0dd0c991438364b911c7"],"state_sha256":"77640d5e1754efd388d51ab0abb262ba42606d2f0db38c16f3cdd3643cfc7d88"}