{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:1999:EOK7W6CXFL642AWNLMSXPTXVPA","short_pith_number":"pith:EOK7W6CX","schema_version":"1.0","canonical_sha256":"2395fb78572afdcd02cd5b2577cef57814bbd1e5deceb597089d81779ce90c34","source":{"kind":"arxiv","id":"cond-mat/9909357","version":1},"attestation_state":"computed","paper":{"title":"Biquadratic interactions and spin-Peierls transition in the spin 1 chain LiVGe2O6","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"A. B. van Oosten, A. Stepanov, A. Sulpice, F. C. Zhang, F. Mila, M. Mambrini, P. Millet, V. A. Pashchenko","submitted_at":"1999-09-24T10:09:40Z","abstract_excerpt":"The magnetic susceptibility of a new one-dimensional, S=1 system, the vanadium oxide LiVGe2O6, has been measured. Contrary to previous S=1 chains, it exhibits an abrupt drop at 22 K typical of a spin-Peierls transition, and it is consistent with a gapless spectrum above this temperature. We propose that this behaviour is due to the presence of a significant biquadratic exchange interaction, a suggestion supported by quantum chemistry calculations that take into account the quasi-degeneracy of the t2g levels."},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"cond-mat/9909357","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.str-el","submitted_at":"1999-09-24T10:09:40Z","cross_cats_sorted":[],"title_canon_sha256":"1c721eb41e3fb0cf40be7ba44a9e5ebfd24210558e2ff487cf1dfa07d5ccb948","abstract_canon_sha256":"5279fb83cfed86401ba20c104ec773110c2ef24514b9f75c0ffa35def3a05e33"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:13:18.688276Z","signature_b64":"5z2IKlE9oNdZhnASe/W5swy9UyLmd9gOe3xPbxKV4PzH3KtyhTlzUfbrK+5dwppUJTpI1VQnkE7AswZ4ZKjLCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2395fb78572afdcd02cd5b2577cef57814bbd1e5deceb597089d81779ce90c34","last_reissued_at":"2026-07-04T16:13:18.687851Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:13:18.687851Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Biquadratic interactions and spin-Peierls transition in the spin 1 chain LiVGe2O6","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"A. B. van Oosten, A. Stepanov, A. Sulpice, F. C. Zhang, F. Mila, M. Mambrini, P. Millet, V. A. Pashchenko","submitted_at":"1999-09-24T10:09:40Z","abstract_excerpt":"The magnetic susceptibility of a new one-dimensional, S=1 system, the vanadium oxide LiVGe2O6, has been measured. Contrary to previous S=1 chains, it exhibits an abrupt drop at 22 K typical of a spin-Peierls transition, and it is consistent with a gapless spectrum above this temperature. We propose that this behaviour is due to the presence of a significant biquadratic exchange interaction, a suggestion supported by quantum chemistry calculations that take into account the quasi-degeneracy of the t2g levels."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/9909357","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/cond-mat/9909357/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/9909357","created_at":"2026-07-04T16:13:18.687918+00:00"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/9909357v1","created_at":"2026-07-04T16:13:18.687918+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/9909357","created_at":"2026-07-04T16:13:18.687918+00:00"},{"alias_kind":"pith_short_12","alias_value":"EOK7W6CXFL64","created_at":"2026-07-04T16:13:18.687918+00:00"},{"alias_kind":"pith_short_16","alias_value":"EOK7W6CXFL642AWN","created_at":"2026-07-04T16:13:18.687918+00:00"},{"alias_kind":"pith_short_8","alias_value":"EOK7W6CX","created_at":"2026-07-04T16:13:18.687918+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/EOK7W6CXFL642AWNLMSXPTXVPA","json":"https://pith.science/pith/EOK7W6CXFL642AWNLMSXPTXVPA.json","graph_json":"https://pith.science/api/pith-number/EOK7W6CXFL642AWNLMSXPTXVPA/graph.json","events_json":"https://pith.science/api/pith-number/EOK7W6CXFL642AWNLMSXPTXVPA/events.json","paper":"https://pith.science/paper/EOK7W6CX"},"agent_actions":{"view_html":"https://pith.science/pith/EOK7W6CXFL642AWNLMSXPTXVPA","download_json":"https://pith.science/pith/EOK7W6CXFL642AWNLMSXPTXVPA.json","view_paper":"https://pith.science/paper/EOK7W6CX","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=cond-mat/9909357&json=true","fetch_graph":"https://pith.science/api/pith-number/EOK7W6CXFL642AWNLMSXPTXVPA/graph.json","fetch_events":"https://pith.science/api/pith-number/EOK7W6CXFL642AWNLMSXPTXVPA/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/EOK7W6CXFL642AWNLMSXPTXVPA/action/timestamp_anchor","attest_storage":"https://pith.science/pith/EOK7W6CXFL642AWNLMSXPTXVPA/action/storage_attestation","attest_author":"https://pith.science/pith/EOK7W6CXFL642AWNLMSXPTXVPA/action/author_attestation","sign_citation":"https://pith.science/pith/EOK7W6CXFL642AWNLMSXPTXVPA/action/citation_signature","submit_replication":"https://pith.science/pith/EOK7W6CXFL642AWNLMSXPTXVPA/action/replication_record"}},"created_at":"2026-07-04T16:13:18.687918+00:00","updated_at":"2026-07-04T16:13:18.687918+00:00"}