{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:R6YER62EDET5N7X5KO3ALOZWTU","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":"edf647aa551b2114cfd94f20a4a5b1a3bc0cb4231c555466b2d07b5db205630f","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2021-05-10T17:55:10Z","title_canon_sha256":"153f0e9eea1aed2c842a7add053eef899c1da265f71d5f341949c6d8b7deb0f1"},"schema_version":"1.0","source":{"id":"2105.04546","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2105.04546","created_at":"2026-07-05T02:38:58Z"},{"alias_kind":"arxiv_version","alias_value":"2105.04546v1","created_at":"2026-07-05T02:38:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2105.04546","created_at":"2026-07-05T02:38:58Z"},{"alias_kind":"pith_short_12","alias_value":"R6YER62EDET5","created_at":"2026-07-05T02:38:58Z"},{"alias_kind":"pith_short_16","alias_value":"R6YER62EDET5N7X5","created_at":"2026-07-05T02:38:58Z"},{"alias_kind":"pith_short_8","alias_value":"R6YER62E","created_at":"2026-07-05T02:38:58Z"}],"graph_snapshots":[{"event_id":"sha256:ee1be7964f96a96fbc00c3a9b399a475d3e43e7b4802e194e4575ccb40973101","target":"graph","created_at":"2026-07-05T02:38:58Z","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/2105.04546/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Two-dimensional (2D) Van Hove singularities (VHSs) associated with the saddle points or extrema of the energy dispersion usually show logarithmic divergences in the density of states (DOS). However, recent studies find that the VHSs originating from higher-order saddle-points have faster-than-logarithmic divergences, which can amplify electron correlation effects and create exotic states such as supermetals in 2D materials. Here we report the existence of 'high-order' VHSs in the cuprates and related high-Tc superconductors and show that the anomalous divergences in their spectra are driven by","authors_text":"Arun Bansil, Bahadur Singh, Christopher Lane, Robert S. Markiewicz","cross_cats":["cond-mat.supr-con"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2021-05-10T17:55:10Z","title":"High-order Van Hove singularities in cuprates and related high-Tc superconductors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.04546","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":"sha256:87f642e512e09c5d5f8db54c1cf22ad1fefbbdde51c4b955f666f9c5cb799d71","target":"record","created_at":"2026-07-05T02:38:58Z","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":"edf647aa551b2114cfd94f20a4a5b1a3bc0cb4231c555466b2d07b5db205630f","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2021-05-10T17:55:10Z","title_canon_sha256":"153f0e9eea1aed2c842a7add053eef899c1da265f71d5f341949c6d8b7deb0f1"},"schema_version":"1.0","source":{"id":"2105.04546","kind":"arxiv","version":1}},"canonical_sha256":"8fb048fb441927d6fefd53b605bb369d2784083cea2342c173dc23c74698086e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8fb048fb441927d6fefd53b605bb369d2784083cea2342c173dc23c74698086e","first_computed_at":"2026-07-05T02:38:58.142016Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:38:58.142016Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FG/xEBGycQXkxUgyxG9ENMNabvk+ZF27hLCOqFSoRzZCqliwhkn+SiIj/OqCs8cS2/OePUH0svcQv0G6GtlwDA==","signature_status":"signed_v1","signed_at":"2026-07-05T02:38:58.142419Z","signed_message":"canonical_sha256_bytes"},"source_id":"2105.04546","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:87f642e512e09c5d5f8db54c1cf22ad1fefbbdde51c4b955f666f9c5cb799d71","sha256:ee1be7964f96a96fbc00c3a9b399a475d3e43e7b4802e194e4575ccb40973101"],"state_sha256":"155608ba7261db8777f95665823e3f0e52c552fabe52eb42118240d6d41f65cd"}