{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:P6S5PQ2BAXMTPT7P2IXYBFCMST","short_pith_number":"pith:P6S5PQ2B","canonical_record":{"source":{"id":"2504.18778","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2025-04-26T03:16:43Z","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.str-el"],"title_canon_sha256":"5ba3d64dcfcbf2f94e6807ba7982e3e1be4f1ccd945a70bdeca9bf3e7052d4f3","abstract_canon_sha256":"f7733e52a4f66705136c4c3e1bdf2e6aee8dc329a4000b84eeca1c5a052769c4"},"schema_version":"1.0"},"canonical_sha256":"7fa5d7c34105d937cfefd22f80944c94d24f65416122e4e3d09ff74faafbd3aa","source":{"kind":"arxiv","id":"2504.18778","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2504.18778","created_at":"2026-07-05T10:54:21Z"},{"alias_kind":"arxiv_version","alias_value":"2504.18778v1","created_at":"2026-07-05T10:54:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2504.18778","created_at":"2026-07-05T10:54:21Z"},{"alias_kind":"pith_short_12","alias_value":"P6S5PQ2BAXMT","created_at":"2026-07-05T10:54:21Z"},{"alias_kind":"pith_short_16","alias_value":"P6S5PQ2BAXMTPT7P","created_at":"2026-07-05T10:54:21Z"},{"alias_kind":"pith_short_8","alias_value":"P6S5PQ2B","created_at":"2026-07-05T10:54:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:P6S5PQ2BAXMTPT7P2IXYBFCMST","target":"record","payload":{"canonical_record":{"source":{"id":"2504.18778","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2025-04-26T03:16:43Z","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.str-el"],"title_canon_sha256":"5ba3d64dcfcbf2f94e6807ba7982e3e1be4f1ccd945a70bdeca9bf3e7052d4f3","abstract_canon_sha256":"f7733e52a4f66705136c4c3e1bdf2e6aee8dc329a4000b84eeca1c5a052769c4"},"schema_version":"1.0"},"canonical_sha256":"7fa5d7c34105d937cfefd22f80944c94d24f65416122e4e3d09ff74faafbd3aa","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:54:21.244706Z","signature_b64":"F2uJgryzQVKflctWSYbDpTVJ47SDglu4noHR+Vv+sNvN0GWxJher+Ti+1fv3ht2JZ5RKKigPyMXf/z5XFsFLAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7fa5d7c34105d937cfefd22f80944c94d24f65416122e4e3d09ff74faafbd3aa","last_reissued_at":"2026-07-05T10:54:21.244229Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:54:21.244229Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2504.18778","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T10:54:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WB5wN04h5RFKYd9UYEZ7GFapxmnwgty+6ZF04Xpi/yh79JDGsSrbtAYbGm5YBId0zyz94KjIjYIbYGcuIrLuDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T10:22:50.755337Z"},"content_sha256":"bf688d6e3900f4351122d9106114ff5d09535e2632f5aaa0f9329a26820d9c65","schema_version":"1.0","event_id":"sha256:bf688d6e3900f4351122d9106114ff5d09535e2632f5aaa0f9329a26820d9c65"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:P6S5PQ2BAXMTPT7P2IXYBFCMST","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Three-Dimensional Fermi Surface, Van Hove Singularity and Enhancement of Superconductivity in Infinite-Layer Nickelates","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.mtrl-sci","cond-mat.str-el"],"primary_cat":"cond-mat.supr-con","authors_text":"Chengliang Xia, Hanghui Chen, Shengjie Zhou","submitted_at":"2025-04-26T03:16:43Z","abstract_excerpt":"Recent experiments reveal a three-dimensional (3D) Fermi surface with a clear $k_z$ dispersion in infinite-layer nickelates, distinguishing them from their cuprate superconductor counterparts. However, the impact of this difference on the superconducting properties of nickelates remains unclear. Here, we employ a combined random-phase-approximation and dynamical-mean-field-theory (RPA+DMFT) approach to solve the linearized gap equation for superconductivity. We find that, compared to the cuprate-like two-dimensional (2D) single-orbital Fermi surface, the van Hove singularities on the 3D Fermi "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.18778","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2504.18778/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T10:54:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RQU4mFzxJ1pfoi4CKQhxGGRFXgNI6L6SpiqpomV7N/f4sKi4d51si9QvO/dDtS/2GXCpOf7eV3CvTghMN9WqCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T10:22:50.756141Z"},"content_sha256":"ac70a9b872edd407e8530afceaeadf0e15871d893fc5ddb59d1840e632328139","schema_version":"1.0","event_id":"sha256:ac70a9b872edd407e8530afceaeadf0e15871d893fc5ddb59d1840e632328139"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/P6S5PQ2BAXMTPT7P2IXYBFCMST/bundle.json","state_url":"https://pith.science/pith/P6S5PQ2BAXMTPT7P2IXYBFCMST/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/P6S5PQ2BAXMTPT7P2IXYBFCMST/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-10T10:22:50Z","links":{"resolver":"https://pith.science/pith/P6S5PQ2BAXMTPT7P2IXYBFCMST","bundle":"https://pith.science/pith/P6S5PQ2BAXMTPT7P2IXYBFCMST/bundle.json","state":"https://pith.science/pith/P6S5PQ2BAXMTPT7P2IXYBFCMST/state.json","well_known_bundle":"https://pith.science/.well-known/pith/P6S5PQ2BAXMTPT7P2IXYBFCMST/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:P6S5PQ2BAXMTPT7P2IXYBFCMST","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":"f7733e52a4f66705136c4c3e1bdf2e6aee8dc329a4000b84eeca1c5a052769c4","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.str-el"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2025-04-26T03:16:43Z","title_canon_sha256":"5ba3d64dcfcbf2f94e6807ba7982e3e1be4f1ccd945a70bdeca9bf3e7052d4f3"},"schema_version":"1.0","source":{"id":"2504.18778","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2504.18778","created_at":"2026-07-05T10:54:21Z"},{"alias_kind":"arxiv_version","alias_value":"2504.18778v1","created_at":"2026-07-05T10:54:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2504.18778","created_at":"2026-07-05T10:54:21Z"},{"alias_kind":"pith_short_12","alias_value":"P6S5PQ2BAXMT","created_at":"2026-07-05T10:54:21Z"},{"alias_kind":"pith_short_16","alias_value":"P6S5PQ2BAXMTPT7P","created_at":"2026-07-05T10:54:21Z"},{"alias_kind":"pith_short_8","alias_value":"P6S5PQ2B","created_at":"2026-07-05T10:54:21Z"}],"graph_snapshots":[{"event_id":"sha256:ac70a9b872edd407e8530afceaeadf0e15871d893fc5ddb59d1840e632328139","target":"graph","created_at":"2026-07-05T10:54:21Z","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/2504.18778/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Recent experiments reveal a three-dimensional (3D) Fermi surface with a clear $k_z$ dispersion in infinite-layer nickelates, distinguishing them from their cuprate superconductor counterparts. However, the impact of this difference on the superconducting properties of nickelates remains unclear. Here, we employ a combined random-phase-approximation and dynamical-mean-field-theory (RPA+DMFT) approach to solve the linearized gap equation for superconductivity. We find that, compared to the cuprate-like two-dimensional (2D) single-orbital Fermi surface, the van Hove singularities on the 3D Fermi ","authors_text":"Chengliang Xia, Hanghui Chen, Shengjie Zhou","cross_cats":["cond-mat.mtrl-sci","cond-mat.str-el"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2025-04-26T03:16:43Z","title":"Three-Dimensional Fermi Surface, Van Hove Singularity and Enhancement of Superconductivity in Infinite-Layer Nickelates"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.18778","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:bf688d6e3900f4351122d9106114ff5d09535e2632f5aaa0f9329a26820d9c65","target":"record","created_at":"2026-07-05T10:54:21Z","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":"f7733e52a4f66705136c4c3e1bdf2e6aee8dc329a4000b84eeca1c5a052769c4","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.str-el"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2025-04-26T03:16:43Z","title_canon_sha256":"5ba3d64dcfcbf2f94e6807ba7982e3e1be4f1ccd945a70bdeca9bf3e7052d4f3"},"schema_version":"1.0","source":{"id":"2504.18778","kind":"arxiv","version":1}},"canonical_sha256":"7fa5d7c34105d937cfefd22f80944c94d24f65416122e4e3d09ff74faafbd3aa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7fa5d7c34105d937cfefd22f80944c94d24f65416122e4e3d09ff74faafbd3aa","first_computed_at":"2026-07-05T10:54:21.244229Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:54:21.244229Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"F2uJgryzQVKflctWSYbDpTVJ47SDglu4noHR+Vv+sNvN0GWxJher+Ti+1fv3ht2JZ5RKKigPyMXf/z5XFsFLAA==","signature_status":"signed_v1","signed_at":"2026-07-05T10:54:21.244706Z","signed_message":"canonical_sha256_bytes"},"source_id":"2504.18778","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bf688d6e3900f4351122d9106114ff5d09535e2632f5aaa0f9329a26820d9c65","sha256:ac70a9b872edd407e8530afceaeadf0e15871d893fc5ddb59d1840e632328139"],"state_sha256":"37e501fee5b0b87bca37d30a46168af20cbbcf245e44c3cd7ca31b09631468da"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LpRQdNiwPcV/LC1LqGS02+UJxDjKPxJEVcD/mqkkA25snw7U02aPqYeUehoGlmgyE5UWjLJ7qUzxoHsxsqpIAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T10:22:50.763618Z","bundle_sha256":"3715f3ec4b0a4c45719ae22ce10ef9809e520f3edc0cb3aa862b247b85a0a218"}}