{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:U4CQPCU5XRQNDAFQJCVGTPPIME","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":"bb3fba58e1fd7ed58ab60a9c3b90564b6b31c20be5c5dd92e08b3c3df37a24fe","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2011-11-14T23:12:36Z","title_canon_sha256":"d5432af7a34b914facff27af67aea027d3d69c5775ab93a023ad45069a54e9ef"},"schema_version":"1.0","source":{"id":"1111.3389","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1111.3389","created_at":"2026-05-18T04:05:38Z"},{"alias_kind":"arxiv_version","alias_value":"1111.3389v1","created_at":"2026-05-18T04:05:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1111.3389","created_at":"2026-05-18T04:05:38Z"},{"alias_kind":"pith_short_12","alias_value":"U4CQPCU5XRQN","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_16","alias_value":"U4CQPCU5XRQNDAFQ","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_8","alias_value":"U4CQPCU5","created_at":"2026-05-18T12:26:42Z"}],"graph_snapshots":[{"event_id":"sha256:818526c97cbcd83ddf634a47430d43b1eedc287d06866fd6d3656a4a36a4384a","target":"graph","created_at":"2026-05-18T04:05:38Z","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":"Synchrotron X-ray diffraction experiment shows that the metal-insulator transition occurring in a ferromagnetic state of a hollandite K$_2$Cr$_8$O$_{16}$ is accompanied by a structural distortion from the tetragonal $I4/m$ to monoclinic $P112_{1}/a$ phase with a $\\sqrt{2}\\times\\sqrt{2}\\times 1$ supercell. Detailed electronic structure calculations demonstrate that the metal-insulator transition is caused by a Peierls instability in the quasi-one-dimensional column structure made of four coupled Cr-O chains running in the $c$-direction, leading to the formation of tetramers of Cr ions below the","authors_text":"A. Nakao, A. V. Ushakov, D. I. Khomskii, H. Nakao, K. Hasegawa, M. Isobe, S. V. Streltsov, T. Konishi, T. Toriyama, Y. Murakami, Y. Ohta, Y. Ueda, Y. Yamaki","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2011-11-14T23:12:36Z","title":"Peierls Mechanism of the Metal-Insulator Transition in Ferromagnetic Hollandite K2Cr8O16"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.3389","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:f83b96046acbbaaa6d6c35ef64d14c69f1ea961e9720de9df15b2602e4da8ad2","target":"record","created_at":"2026-05-18T04:05:38Z","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":"bb3fba58e1fd7ed58ab60a9c3b90564b6b31c20be5c5dd92e08b3c3df37a24fe","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2011-11-14T23:12:36Z","title_canon_sha256":"d5432af7a34b914facff27af67aea027d3d69c5775ab93a023ad45069a54e9ef"},"schema_version":"1.0","source":{"id":"1111.3389","kind":"arxiv","version":1}},"canonical_sha256":"a705078a9dbc60d180b048aa69bde86124a2e4ea828d90bf38c12bb3df759b61","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a705078a9dbc60d180b048aa69bde86124a2e4ea828d90bf38c12bb3df759b61","first_computed_at":"2026-05-18T04:05:38.061135Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:05:38.061135Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CMyv0KZ05maObnTfJAmFXb9QNecbmJnf/hBU1ZHqJlicEGErzYQJt0fOZ+Xn4PVnk/qBsXXI331q7T99CAiPAw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:05:38.061565Z","signed_message":"canonical_sha256_bytes"},"source_id":"1111.3389","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f83b96046acbbaaa6d6c35ef64d14c69f1ea961e9720de9df15b2602e4da8ad2","sha256:818526c97cbcd83ddf634a47430d43b1eedc287d06866fd6d3656a4a36a4384a"],"state_sha256":"4d32ca811110433ba58d3d4005a8a0fa475564959b8415666abae46e892b1db0"}