{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:SEZKVQ6V2JRIBMJMDTDYNPAKTL","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":"4d1e950dbd95c1ad4cf564352f0889ca7313815b583355e5be65dc0522a0964c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-08-06T16:06:45Z","title_canon_sha256":"cd48d6d25ddb14e6bc0aad4220a674668c9f59c14b70d1f67e7b41b949798904"},"schema_version":"1.0","source":{"id":"1208.1197","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.1197","created_at":"2026-05-18T03:22:17Z"},{"alias_kind":"arxiv_version","alias_value":"1208.1197v3","created_at":"2026-05-18T03:22:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.1197","created_at":"2026-05-18T03:22:17Z"},{"alias_kind":"pith_short_12","alias_value":"SEZKVQ6V2JRI","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_16","alias_value":"SEZKVQ6V2JRIBMJM","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_8","alias_value":"SEZKVQ6V","created_at":"2026-05-18T12:27:20Z"}],"graph_snapshots":[{"event_id":"sha256:7f217a32a6fe4ba9c1c41c69e48861d91d4cace92a5a543050f128f57dbabb61","target":"graph","created_at":"2026-05-18T03:22:17Z","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 propose a minimal model describing magnetic behavior of Fe-based superconductors. The key ingredient of the model is a dynamical mixing of quasi-degenerate spin states of Fe2+ ion by intersite electron hoppings, resulting in an effective local spin Seff. The moments Seff tend to form singlet pairs, and may condense into a spin nematic phase due to the emergent biquadratic exchange couplings. The long-range ordered part m of Seff varies widely, 0<=m<=Seff, but magnon spectra are universal and scale with Seff, resolving the puzzle of large but fluctuating Fe-moments. Unusual temperature depen","authors_text":"Giniyat Khaliullin, Ji\\v{r}\\'i Chaloupka","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-08-06T16:06:45Z","title":"Spin-state Crossover Model for the Magnetism of Iron Pnictides"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.1197","kind":"arxiv","version":3},"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:bd126b2cc762ae32774f4dce16fd02361da01773a7d5b0952d1e53b86adac99a","target":"record","created_at":"2026-05-18T03:22:17Z","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":"4d1e950dbd95c1ad4cf564352f0889ca7313815b583355e5be65dc0522a0964c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-08-06T16:06:45Z","title_canon_sha256":"cd48d6d25ddb14e6bc0aad4220a674668c9f59c14b70d1f67e7b41b949798904"},"schema_version":"1.0","source":{"id":"1208.1197","kind":"arxiv","version":3}},"canonical_sha256":"9132aac3d5d26280b12c1cc786bc0a9adf8e6d3b8d113fb56dea0b72de825dfe","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9132aac3d5d26280b12c1cc786bc0a9adf8e6d3b8d113fb56dea0b72de825dfe","first_computed_at":"2026-05-18T03:22:17.449791Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:22:17.449791Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"u8vIAJmNdz01aVcECsuG/gfd/kJY79+IgFPqNjDBewnzl+mg9bMJA6JxaWO1HJSPhSEF6n/N6lBXBfYWRP0QAg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:22:17.450213Z","signed_message":"canonical_sha256_bytes"},"source_id":"1208.1197","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bd126b2cc762ae32774f4dce16fd02361da01773a7d5b0952d1e53b86adac99a","sha256:7f217a32a6fe4ba9c1c41c69e48861d91d4cace92a5a543050f128f57dbabb61"],"state_sha256":"1583cb7a6b71390629441614b4a493dac8a8e0cfb4bf76fe5ead53e4db06a95b"}