{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:PQ2JISIQ7SJMVG4EGE5GIMIDR6","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":"f7f1139e20922f4e08b772f4562e59bea804c842ce5ad33bc0b37e0725d72462","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2022-11-02T08:46:57Z","title_canon_sha256":"a9d907a3d57ed4568e4265080814d628a4d02c3b1f8894d4c428c0cb166178ca"},"schema_version":"1.0","source":{"id":"2211.00958","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2211.00958","created_at":"2026-07-05T05:54:32Z"},{"alias_kind":"arxiv_version","alias_value":"2211.00958v1","created_at":"2026-07-05T05:54:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2211.00958","created_at":"2026-07-05T05:54:32Z"},{"alias_kind":"pith_short_12","alias_value":"PQ2JISIQ7SJM","created_at":"2026-07-05T05:54:32Z"},{"alias_kind":"pith_short_16","alias_value":"PQ2JISIQ7SJMVG4E","created_at":"2026-07-05T05:54:32Z"},{"alias_kind":"pith_short_8","alias_value":"PQ2JISIQ","created_at":"2026-07-05T05:54:32Z"}],"graph_snapshots":[{"event_id":"sha256:dd48bb01a89f040f74a82b45545e746a0ae0c6e8affc5a17b869a898963bf637","target":"graph","created_at":"2026-07-05T05:54:32Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2211.00958/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We investigated the structural, electronic, and superconducting properties of Co1-xNixZr2, in which c-axis thermal expansion is systematically controlled. At x (smaller than) 0.3, c-axis negative thermal expansion (NTE) was observed, and the thermal expansion constant {\\alpha}c approached zero with increasing x. At x = 0.4-0.6, zero thermal expansion was observed, and positive thermal expansion (PTE) appeared for x (greater than) 0.7. By analyzing the c/a ratio, we observed a possible collapsed transition in the tetragonal lattice at around x = 0.6-0.8. The lattice collapse results in c-axis P","authors_text":"Hidetomo Usui, Hiroto Arima, Yoshikazu Mizuguchi, Yuto Watanabe","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2022-11-02T08:46:57Z","title":"Sign change in c-axis thermal expansion and lattice collapse by Ni substitution in Co1-xNixZr2 superconductors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2211.00958","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":"sha256:65faedbaa0a16a2b963830be6e5f91f7b790433448d052f39ef34dd6fed84c09","target":"record","created_at":"2026-07-05T05:54:32Z","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":"f7f1139e20922f4e08b772f4562e59bea804c842ce5ad33bc0b37e0725d72462","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2022-11-02T08:46:57Z","title_canon_sha256":"a9d907a3d57ed4568e4265080814d628a4d02c3b1f8894d4c428c0cb166178ca"},"schema_version":"1.0","source":{"id":"2211.00958","kind":"arxiv","version":1}},"canonical_sha256":"7c34944910fc92ca9b84313a6431038fb2f0b2c165832beb31124377460e8be1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7c34944910fc92ca9b84313a6431038fb2f0b2c165832beb31124377460e8be1","first_computed_at":"2026-07-05T05:54:32.586028Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:54:32.586028Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+wChM4LCovduE8iJg9KMLqEBy++WjY1IXnOOkXL8MaiWTRybwBPAoaa4K1F8/69mPzAqtH5OaQNdt2IoIWlkBA==","signature_status":"signed_v1","signed_at":"2026-07-05T05:54:32.586544Z","signed_message":"canonical_sha256_bytes"},"source_id":"2211.00958","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:65faedbaa0a16a2b963830be6e5f91f7b790433448d052f39ef34dd6fed84c09","sha256:dd48bb01a89f040f74a82b45545e746a0ae0c6e8affc5a17b869a898963bf637"],"state_sha256":"4598db5cd9504c8df1e095e6bfcfa1eeeed0a7fbd6742dce9a242d1c5e53b166"}