{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:UYM67LODDRXB67HUEWC5CFZWBR","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":"4d7dab14f253482f2277effd224dc0d5e4a6f3d741fdd29833f63adf770a87d8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2009-07-29T10:58:34Z","title_canon_sha256":"b957712b3842e5feb5f777c3ca41824c655a84a28aa2b4df2face6e9b0b3fbb0"},"schema_version":"1.0","source":{"id":"0907.5103","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0907.5103","created_at":"2026-05-18T02:12:46Z"},{"alias_kind":"arxiv_version","alias_value":"0907.5103v2","created_at":"2026-05-18T02:12:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0907.5103","created_at":"2026-05-18T02:12:46Z"},{"alias_kind":"pith_short_12","alias_value":"UYM67LODDRXB","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"UYM67LODDRXB67HU","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"UYM67LOD","created_at":"2026-05-18T12:26:02Z"}],"graph_snapshots":[{"event_id":"sha256:a555f8dd0011b927289ac7ee87cddc8bf205bf12a4046ca4dec5f3c2ea3aa258","target":"graph","created_at":"2026-05-18T02:12:46Z","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":"The two-dimensional (2D) quantum spin system (CuCl)LaNb2O7 has a spin-singlet ground state with a gap of 2.3 meV, while the isostructural material (CuBr)LaNb2O7 displays collinear antiferromagnetic order at TN = 32 K. Here we report on the synthesis of solid solution (CuCl1-xBrx)LaNb2O7 (0 < x < 1), and its structural and magnetic properties by means of magnetic susceptibility, high-field magnetization, and neutron diffraction studies. The x-dependence of cell parameters follows Vegards law, verifying the uniform distribution of Cl and Br atoms at the halide site, though a more complex structu","authors_text":"Atsushi Kitada, Hiroshi Kageyama, Kazuyoshi Yoshimura, Koichi Kindo, Masakazu Nishi, Yasuo Narumi, Yasutomo J. Uemura, Yoshihiro Tsujimoto, Yoshitami Ajiro, Yuko Kiuchi, Yutaka Ueda","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2009-07-29T10:58:34Z","title":"Synthesis, Structural and magnetic properties of the solid solution (CuCl1-xBrx)LaNb2O7 (0<x<1)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0907.5103","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":"sha256:30a49b8342e7a568518d44260951ce1d65b6396b4137553c9fd73fedd437c40c","target":"record","created_at":"2026-05-18T02:12:46Z","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":"4d7dab14f253482f2277effd224dc0d5e4a6f3d741fdd29833f63adf770a87d8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2009-07-29T10:58:34Z","title_canon_sha256":"b957712b3842e5feb5f777c3ca41824c655a84a28aa2b4df2face6e9b0b3fbb0"},"schema_version":"1.0","source":{"id":"0907.5103","kind":"arxiv","version":2}},"canonical_sha256":"a619efadc31c6e1f7cf42585d117360c64b917d4fcd2e8cc78d9758fcc33bd27","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a619efadc31c6e1f7cf42585d117360c64b917d4fcd2e8cc78d9758fcc33bd27","first_computed_at":"2026-05-18T02:12:46.605094Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:12:46.605094Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JbUuAnDe0Y6knegY+A8HkWzwAMQgnx46mE1GpUbUSKB5vk5QcTh9tQ7p4CKvVTxA06PfhzfFJ/i61xBjmxr9BQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:12:46.605766Z","signed_message":"canonical_sha256_bytes"},"source_id":"0907.5103","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:30a49b8342e7a568518d44260951ce1d65b6396b4137553c9fd73fedd437c40c","sha256:a555f8dd0011b927289ac7ee87cddc8bf205bf12a4046ca4dec5f3c2ea3aa258"],"state_sha256":"78671e23d40fa5f43ab9fa7745706ab0ac0c7ef05419f18e5ca7392cc58e5b44"}