{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:VDQMDJIUHJABT77M3NWMENHELO","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":"9d187088a4a68f4574ee3ed2ed47964fa21ab5890c6105d7309fbf586eb8f293","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2019-12-12T17:55:04Z","title_canon_sha256":"aaf0350645ffee62437f2c3cb131774be62f2441b47ec819dbdd4a470dee7f98"},"schema_version":"1.0","source":{"id":"1912.06099","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1912.06099","created_at":"2026-07-05T00:59:56Z"},{"alias_kind":"arxiv_version","alias_value":"1912.06099v2","created_at":"2026-07-05T00:59:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1912.06099","created_at":"2026-07-05T00:59:56Z"},{"alias_kind":"pith_short_12","alias_value":"VDQMDJIUHJAB","created_at":"2026-07-05T00:59:56Z"},{"alias_kind":"pith_short_16","alias_value":"VDQMDJIUHJABT77M","created_at":"2026-07-05T00:59:56Z"},{"alias_kind":"pith_short_8","alias_value":"VDQMDJIU","created_at":"2026-07-05T00:59:56Z"}],"graph_snapshots":[{"event_id":"sha256:51b5e76177fd9e22fa2a9b31c6a67de9ace5b435a06ae50b4ef8d844f0fc7ab0","target":"graph","created_at":"2026-07-05T00:59:56Z","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/1912.06099/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Recently Li et al (2019 Nature 572 624) discovered a new type of oxide superconductor Nd0.8Sr0.2NiO2 with T$_c$ = 14 K. To classify superconductivity in this infinite-layer nickelate experimental upper critical field, B$_{c2}$(T), and the self-field critical current densities, J$_c$(sf,T), reported by Li et al (2019 Nature 572 624), are analysed in assumption of s-, d-, and p-wave pairing symmetries and single- and multiple-band superconductivity. Based on deduced the ground-state superconducting energy gap, $\\Delta$(0), the London penetration depth, $\\lambda$(0), the relative jump in electron","authors_text":"E.F. Talantsev","cross_cats":["cond-mat.str-el"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2019-12-12T17:55:04Z","title":"Classifying superconductivity in an infinite-layer nickelate Nd$_{0.8}$Sr$_{0.2}$NiO$_2$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1912.06099","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":"sha256:2a7289371ce1942cf915b3d73df0f6b27aa411ad76ef21cdc9633e2c93063e88","target":"record","created_at":"2026-07-05T00:59:56Z","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":"9d187088a4a68f4574ee3ed2ed47964fa21ab5890c6105d7309fbf586eb8f293","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2019-12-12T17:55:04Z","title_canon_sha256":"aaf0350645ffee62437f2c3cb131774be62f2441b47ec819dbdd4a470dee7f98"},"schema_version":"1.0","source":{"id":"1912.06099","kind":"arxiv","version":2}},"canonical_sha256":"a8e0c1a5143a4019ffecdb6cc234e45b82fc765d6e06b2f96282f50179a5bb94","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a8e0c1a5143a4019ffecdb6cc234e45b82fc765d6e06b2f96282f50179a5bb94","first_computed_at":"2026-07-05T00:59:56.022707Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:59:56.022707Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QRczzooRXEcZePrUk2PxsXRrP3lz8fYpDTTuzZQcgegw3bi0a55EHBaIO4Uva75mgytFbgWvqMyHMBxyX+z2BA==","signature_status":"signed_v1","signed_at":"2026-07-05T00:59:56.023103Z","signed_message":"canonical_sha256_bytes"},"source_id":"1912.06099","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2a7289371ce1942cf915b3d73df0f6b27aa411ad76ef21cdc9633e2c93063e88","sha256:51b5e76177fd9e22fa2a9b31c6a67de9ace5b435a06ae50b4ef8d844f0fc7ab0"],"state_sha256":"6563cc54d14827e8a1ae439d6efec4ba2f086c1cae6054733619ca0cb2a3371f"}