{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:KKBEDBU4EU2VXMPOMXGK3U2EZ4","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":"e435b2583377e613de1907f4885d115fdc3d4942d9714b29a786715b6097f294","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2010-11-15T08:20:29Z","title_canon_sha256":"92958f1473bdb153184bafa239d9933d8fa8af0589f6e897f40b9d923bbd76ba"},"schema_version":"1.0","source":{"id":"1011.3308","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1011.3308","created_at":"2026-05-18T04:24:43Z"},{"alias_kind":"arxiv_version","alias_value":"1011.3308v2","created_at":"2026-05-18T04:24:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1011.3308","created_at":"2026-05-18T04:24:43Z"},{"alias_kind":"pith_short_12","alias_value":"KKBEDBU4EU2V","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_16","alias_value":"KKBEDBU4EU2VXMPO","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_8","alias_value":"KKBEDBU4","created_at":"2026-05-18T12:26:09Z"}],"graph_snapshots":[{"event_id":"sha256:6b32e3b3f91cc300d556f40350e864e75e1bb7419e0292345a86702888d4ff7c","target":"graph","created_at":"2026-05-18T04:24:43Z","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":"We show, by means of ab-initio calculations, that electron-electron correlations play an important role in potassium-doped picene ($K_x$-picene), recently characterized as a superconductor with $T_c = 18K$. The inclusion of exchange interactions by means of hybrid functionals reproduces the correct gap for the undoped compound and predicts an antiferromagnetic state for $x=3$, where superconductivity has been observed. The latter finding is compatible with a sizable value of the correlation strength, in agreement with simple estimates. Our results highlight the similarity between potassium-dop","authors_text":"Gianluca Giovannetti, Massimo Capone","cross_cats":["cond-mat.supr-con"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2010-11-15T08:20:29Z","title":"Electronic Correlation effects in superconducting picene from ab-initio calculations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1011.3308","kind":"arxiv","version":2},"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":"sha256:1067799a402498c27d9e0db4413ff5ff358e5392fb71324b49ad3afef39659cc","target":"record","created_at":"2026-05-18T04:24:43Z","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":"e435b2583377e613de1907f4885d115fdc3d4942d9714b29a786715b6097f294","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2010-11-15T08:20:29Z","title_canon_sha256":"92958f1473bdb153184bafa239d9933d8fa8af0589f6e897f40b9d923bbd76ba"},"schema_version":"1.0","source":{"id":"1011.3308","kind":"arxiv","version":2}},"canonical_sha256":"528241869c25355bb1ee65ccadd344cf26ead946fa04e9c3f8e1bbe24f11e762","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"528241869c25355bb1ee65ccadd344cf26ead946fa04e9c3f8e1bbe24f11e762","first_computed_at":"2026-05-18T04:24:43.661674Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:24:43.661674Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QFJKR7nNwhYUMD46M2ouFt2BG1GzEKj7g5ZZ9LKFP+STC6yTjCf7A+Ju/Epxci3bgpR8rMzO+nS2Bl6L84hZDw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:24:43.662108Z","signed_message":"canonical_sha256_bytes"},"source_id":"1011.3308","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1067799a402498c27d9e0db4413ff5ff358e5392fb71324b49ad3afef39659cc","sha256:6b32e3b3f91cc300d556f40350e864e75e1bb7419e0292345a86702888d4ff7c"],"state_sha256":"1e607c69ff090786d2b8dd48e6e6c76b89abc3331d3ed943be1097d411b7a310"}