{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2006:3AAKHT5OHEKETUU4CJIL33BADH","short_pith_number":"pith:3AAKHT5O","canonical_record":{"source":{"id":"cond-mat/0605046","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"cond-mat.str-el","submitted_at":"2006-05-02T06:45:12Z","cross_cats_sorted":[],"title_canon_sha256":"7d8969d8f3c79ba54fc88746fd5332f25bc9313d9d6d34e1a3bffd7dfa8081cf","abstract_canon_sha256":"88fbce622f6b16025857ebb73217fab12bd8855a74e2bf3924d5c5a043147368"},"schema_version":"1.0"},"canonical_sha256":"d800a3cfae391449d29c1250bdec2019d7926b76a78154b78e8fa2334c0c2433","source":{"kind":"arxiv","id":"cond-mat/0605046","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0605046","created_at":"2026-05-18T01:39:47Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0605046v2","created_at":"2026-05-18T01:39:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0605046","created_at":"2026-05-18T01:39:47Z"},{"alias_kind":"pith_short_12","alias_value":"3AAKHT5OHEKE","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"3AAKHT5OHEKETUU4","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"3AAKHT5O","created_at":"2026-05-18T12:25:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2006:3AAKHT5OHEKETUU4CJIL33BADH","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/0605046","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"cond-mat.str-el","submitted_at":"2006-05-02T06:45:12Z","cross_cats_sorted":[],"title_canon_sha256":"7d8969d8f3c79ba54fc88746fd5332f25bc9313d9d6d34e1a3bffd7dfa8081cf","abstract_canon_sha256":"88fbce622f6b16025857ebb73217fab12bd8855a74e2bf3924d5c5a043147368"},"schema_version":"1.0"},"canonical_sha256":"d800a3cfae391449d29c1250bdec2019d7926b76a78154b78e8fa2334c0c2433","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:39:47.847615Z","signature_b64":"2mXtAc3ysX/NTUICg29t2TMb4t69L0jeev/juBak5/2V+0qRt1/SkJqvffRBTGh+Qls2wuDroALGRxALHx/2CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d800a3cfae391449d29c1250bdec2019d7926b76a78154b78e8fa2334c0c2433","last_reissued_at":"2026-05-18T01:39:47.846895Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:39:47.846895Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/0605046","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:39:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CqNOIWvrxbkA8sjSPZkGZuQMb8RWUDDVJQQsfbIqUZJwUu4p73MKzcFEpgTdKA9qOa7/fRLwGGYO38CfvBHTBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T18:48:22.594331Z"},"content_sha256":"3cb2b9326ae42669dc05cdcf7fe72f071b170954262f9fc29c67e2aecc6b8378","schema_version":"1.0","event_id":"sha256:3cb2b9326ae42669dc05cdcf7fe72f071b170954262f9fc29c67e2aecc6b8378"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2006:3AAKHT5OHEKETUU4CJIL33BADH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spin Singlet State in Heptamers Emerging in Spinel Oxide AlV$_2$O$_4$","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"Keisuke Matsuda, Nobuo Furukawa, Yukitoshi Motome","submitted_at":"2006-05-02T06:45:12Z","abstract_excerpt":"We present our theoretical results on the electronic state in vanadium spinel oxide AlV$_2$O$_4$. The material is a mixed-valent system with the average valence V$^{2.5+}$, and V cations constitute a frustrated pyrochlore structure. It shows a structural transition at $\\sim 700$ K, leading to the formation of seven V-sites clusters -- heptamers. We study the electronic state of the heptamer by explicitly taking account of orbital degree of freedom as well as electron correlations. We show that the ground state of the heptamer for realistic parameters becomes spin-singlet because of strong $\\si"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0605046","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":""},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:39:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0p00c3DtKSLMOo/X6XcsdjXc/6G1xtxoxt0Ehuax3slgElZ+I67V8d/doHHvthWpJlHGs9WM0j3GhI6e5jL8BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T18:48:22.594994Z"},"content_sha256":"a813aa3349875517cd4fcc9f5f8c22040105f065156de5ead9057ca08ce7b558","schema_version":"1.0","event_id":"sha256:a813aa3349875517cd4fcc9f5f8c22040105f065156de5ead9057ca08ce7b558"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3AAKHT5OHEKETUU4CJIL33BADH/bundle.json","state_url":"https://pith.science/pith/3AAKHT5OHEKETUU4CJIL33BADH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3AAKHT5OHEKETUU4CJIL33BADH/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-25T18:48:22Z","links":{"resolver":"https://pith.science/pith/3AAKHT5OHEKETUU4CJIL33BADH","bundle":"https://pith.science/pith/3AAKHT5OHEKETUU4CJIL33BADH/bundle.json","state":"https://pith.science/pith/3AAKHT5OHEKETUU4CJIL33BADH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3AAKHT5OHEKETUU4CJIL33BADH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:3AAKHT5OHEKETUU4CJIL33BADH","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":"88fbce622f6b16025857ebb73217fab12bd8855a74e2bf3924d5c5a043147368","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.str-el","submitted_at":"2006-05-02T06:45:12Z","title_canon_sha256":"7d8969d8f3c79ba54fc88746fd5332f25bc9313d9d6d34e1a3bffd7dfa8081cf"},"schema_version":"1.0","source":{"id":"cond-mat/0605046","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0605046","created_at":"2026-05-18T01:39:47Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0605046v2","created_at":"2026-05-18T01:39:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0605046","created_at":"2026-05-18T01:39:47Z"},{"alias_kind":"pith_short_12","alias_value":"3AAKHT5OHEKE","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"3AAKHT5OHEKETUU4","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"3AAKHT5O","created_at":"2026-05-18T12:25:53Z"}],"graph_snapshots":[{"event_id":"sha256:a813aa3349875517cd4fcc9f5f8c22040105f065156de5ead9057ca08ce7b558","target":"graph","created_at":"2026-05-18T01:39:47Z","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 present our theoretical results on the electronic state in vanadium spinel oxide AlV$_2$O$_4$. The material is a mixed-valent system with the average valence V$^{2.5+}$, and V cations constitute a frustrated pyrochlore structure. It shows a structural transition at $\\sim 700$ K, leading to the formation of seven V-sites clusters -- heptamers. We study the electronic state of the heptamer by explicitly taking account of orbital degree of freedom as well as electron correlations. We show that the ground state of the heptamer for realistic parameters becomes spin-singlet because of strong $\\si","authors_text":"Keisuke Matsuda, Nobuo Furukawa, Yukitoshi Motome","cross_cats":[],"headline":"","license":"","primary_cat":"cond-mat.str-el","submitted_at":"2006-05-02T06:45:12Z","title":"Spin Singlet State in Heptamers Emerging in Spinel Oxide AlV$_2$O$_4$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0605046","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":"sha256:3cb2b9326ae42669dc05cdcf7fe72f071b170954262f9fc29c67e2aecc6b8378","target":"record","created_at":"2026-05-18T01:39:47Z","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":"88fbce622f6b16025857ebb73217fab12bd8855a74e2bf3924d5c5a043147368","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.str-el","submitted_at":"2006-05-02T06:45:12Z","title_canon_sha256":"7d8969d8f3c79ba54fc88746fd5332f25bc9313d9d6d34e1a3bffd7dfa8081cf"},"schema_version":"1.0","source":{"id":"cond-mat/0605046","kind":"arxiv","version":2}},"canonical_sha256":"d800a3cfae391449d29c1250bdec2019d7926b76a78154b78e8fa2334c0c2433","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d800a3cfae391449d29c1250bdec2019d7926b76a78154b78e8fa2334c0c2433","first_computed_at":"2026-05-18T01:39:47.846895Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:39:47.846895Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2mXtAc3ysX/NTUICg29t2TMb4t69L0jeev/juBak5/2V+0qRt1/SkJqvffRBTGh+Qls2wuDroALGRxALHx/2CQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:39:47.847615Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0605046","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3cb2b9326ae42669dc05cdcf7fe72f071b170954262f9fc29c67e2aecc6b8378","sha256:a813aa3349875517cd4fcc9f5f8c22040105f065156de5ead9057ca08ce7b558"],"state_sha256":"1f6fb8844a9311b92b70107c5c842105927e58ac79e698e5690e2b493523d11d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HNng6IugBnizq4RwEKKbH/SnqUKMsDzRhH12dd5HwBQ7JbCYi/J0mDMTNIPO6kVmxfXWOjJQZidOzubOR90ODQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T18:48:22.598819Z","bundle_sha256":"648a92db0468b5d5ffa84cb57adac8e520f513917de35ec19b389c2828443c36"}}