{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:NPRS7YO5ITCHXZFF3H3O4TIVXM","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":"bbc23bd38099fa8345fdaa669847ca7b305449a4d4503fbbaa200545fa9f1b3f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2009-04-20T08:25:36Z","title_canon_sha256":"e85307e9fbf2c55067a6b52e59949d99fc2e0bca3a32d8e9eda80b3c56e3b22b"},"schema_version":"1.0","source":{"id":"0904.2969","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0904.2969","created_at":"2026-07-04T15:42:27Z"},{"alias_kind":"arxiv_version","alias_value":"0904.2969v1","created_at":"2026-07-04T15:42:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0904.2969","created_at":"2026-07-04T15:42:27Z"},{"alias_kind":"pith_short_12","alias_value":"NPRS7YO5ITCH","created_at":"2026-07-04T15:42:27Z"},{"alias_kind":"pith_short_16","alias_value":"NPRS7YO5ITCHXZFF","created_at":"2026-07-04T15:42:27Z"},{"alias_kind":"pith_short_8","alias_value":"NPRS7YO5","created_at":"2026-07-04T15:42:27Z"}],"graph_snapshots":[{"event_id":"sha256:cd0d0403829c5ce513f2427441f7517c324663cd02ae9ced6f042c4dda5402f2","target":"graph","created_at":"2026-07-04T15:42:27Z","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/0904.2969/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report on precise low-temperature specific-heat measurements, C(T), of YbRh2Si2 in the vicinity of the antiferromagnetic phase transition on a single crystal of superior quality (RRR 150). We observe a very sharp peak at T_N=72mK with absolute values as high as C/T=8J/molK^2. A detailed analysis of the critical exponent \\alpha around T_N reveals \\alpha=0.38 which differs significantly from those of the conventional universality classes in the Ginzburg-Landau theory, where \\alpha<0.11. Thermal-expansion measurements corroborate this large positive critical exponent. These results provide ins","authors_text":"A. Pikul, C. Geibel, C. Krellner, F. Steglich, J. G. Donath, J. Wosnitza, N. Oeschler, S. Hartmann","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2009-04-20T08:25:36Z","title":"Violation of critical universality at the antiferromagnetic phase transition of YbRh2Si2"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0904.2969","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":"sha256:349871a7ff81fa5265e127906d78cb6b80957cdae506cae4bbd4c2409e8fad54","target":"record","created_at":"2026-07-04T15:42:27Z","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":"bbc23bd38099fa8345fdaa669847ca7b305449a4d4503fbbaa200545fa9f1b3f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2009-04-20T08:25:36Z","title_canon_sha256":"e85307e9fbf2c55067a6b52e59949d99fc2e0bca3a32d8e9eda80b3c56e3b22b"},"schema_version":"1.0","source":{"id":"0904.2969","kind":"arxiv","version":1}},"canonical_sha256":"6be32fe1dd44c47be4a5d9f6ee4d15bb0e2e9c3cb1c6b7096a16885bd2bf7e65","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6be32fe1dd44c47be4a5d9f6ee4d15bb0e2e9c3cb1c6b7096a16885bd2bf7e65","first_computed_at":"2026-07-04T15:42:27.151335Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:42:27.151335Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/OKXZosh6kFXsGllROEoXEcfkkJ6a/AKSemxzWWuKQKiYR7rFdG5+3TcUniDhCPZt5KYz80IkRHmv8wiHAi8BQ==","signature_status":"signed_v1","signed_at":"2026-07-04T15:42:27.151711Z","signed_message":"canonical_sha256_bytes"},"source_id":"0904.2969","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:349871a7ff81fa5265e127906d78cb6b80957cdae506cae4bbd4c2409e8fad54","sha256:cd0d0403829c5ce513f2427441f7517c324663cd02ae9ced6f042c4dda5402f2"],"state_sha256":"542ab99ddb1838ddf30e2d16715a06bbbd80433f50afea0df24a0d228624c426"}