{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:26WHQHEZQ62JRZPZZESTSH64XT","short_pith_number":"pith:26WHQHEZ","canonical_record":{"source":{"id":"2309.01651","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2023-09-04T15:03:51Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"a9314c6f36ef94ad733947dffffb40cf420c4e1bdd7d71bcb2608172925c39e8","abstract_canon_sha256":"b8111cd449b80bd67137e8740b863a4128503e333a75f128315bfd9b3cf5bd1c"},"schema_version":"1.0"},"canonical_sha256":"d7ac781c9987b498e5f9c925391fdcbcf022cbcc58b06fe159a1799575582314","source":{"kind":"arxiv","id":"2309.01651","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2309.01651","created_at":"2026-07-05T07:27:26Z"},{"alias_kind":"arxiv_version","alias_value":"2309.01651v2","created_at":"2026-07-05T07:27:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2309.01651","created_at":"2026-07-05T07:27:26Z"},{"alias_kind":"pith_short_12","alias_value":"26WHQHEZQ62J","created_at":"2026-07-05T07:27:26Z"},{"alias_kind":"pith_short_16","alias_value":"26WHQHEZQ62JRZPZ","created_at":"2026-07-05T07:27:26Z"},{"alias_kind":"pith_short_8","alias_value":"26WHQHEZ","created_at":"2026-07-05T07:27:26Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:26WHQHEZQ62JRZPZZESTSH64XT","target":"record","payload":{"canonical_record":{"source":{"id":"2309.01651","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2023-09-04T15:03:51Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"a9314c6f36ef94ad733947dffffb40cf420c4e1bdd7d71bcb2608172925c39e8","abstract_canon_sha256":"b8111cd449b80bd67137e8740b863a4128503e333a75f128315bfd9b3cf5bd1c"},"schema_version":"1.0"},"canonical_sha256":"d7ac781c9987b498e5f9c925391fdcbcf022cbcc58b06fe159a1799575582314","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:27:26.718904Z","signature_b64":"bnXIrSx/Tnuv6cFfjvnyEoKouYGJei4U2Na6dAtm7ZALi7QdrRMJTHD3l+IfmIsG299pFvArhqE51Oek4OrTAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d7ac781c9987b498e5f9c925391fdcbcf022cbcc58b06fe159a1799575582314","last_reissued_at":"2026-07-05T07:27:26.718225Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:27:26.718225Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2309.01651","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T07:27:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Iujn1Ma+RN5p4dPKmC3tUMCyInhy5VjsZxZpboSsdlEHB7+QznEGn1saiDg2oJna0NF506np5AQwsbpKPnjICQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-09T06:01:09.286292Z"},"content_sha256":"19fd494a2b2fa26729ca6891b7698cf280cb644816467c0b788ac441f1ca97e9","schema_version":"1.0","event_id":"sha256:19fd494a2b2fa26729ca6891b7698cf280cb644816467c0b788ac441f1ca97e9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:26WHQHEZQ62JRZPZZESTSH64XT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Effects of Pressure and Doping on Ruddlesden-Popper phases Lan+1NinO3n+1","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.supr-con","authors_text":"Changhua Li, Cuiying Pei, Juefei Wu, Mingxin Zhang, Qi Wang, Shihao Zhu, Weizheng Cao, Yanpeng Qi, Yi Zhao","submitted_at":"2023-09-04T15:03:51Z","abstract_excerpt":"Recently the discovery of superconductivity with a critical temperature Tc up to 80 K in Ruddlesden-Popper phases Lan+1NinO3n+1 (n = 2) under pressure has garnered considerable attention. Up to now, the superconductivity was only observed in La3Ni2O7 single crystal grown with the optical-image floating zone furnace under oxygen pressure. It remains to be understood the effect of chemical doping on superconducting La3Ni2O7 as well as other Ruddlesden-Popper phases. Here, we systematically investigate the effect of external pressure and chemical doping on polycrystalline Ruddlesden-Popper phases"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2309.01651","kind":"arxiv","version":2},"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/2309.01651/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":"2026-07-05T07:27:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"P7K3GSEmlnAsHmU9W8WX0yrn2J4iRbFj8yzh1wfEF8ZnxMA9fucVhcg/fCr6Jxcowqz0bQThpuVSD4/Nld5aBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-09T06:01:09.286917Z"},"content_sha256":"4b89b3dbc452e7eb09f311c98219cd01e1dfcf2d8524216469b6dbc122a3399f","schema_version":"1.0","event_id":"sha256:4b89b3dbc452e7eb09f311c98219cd01e1dfcf2d8524216469b6dbc122a3399f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/26WHQHEZQ62JRZPZZESTSH64XT/bundle.json","state_url":"https://pith.science/pith/26WHQHEZQ62JRZPZZESTSH64XT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/26WHQHEZQ62JRZPZZESTSH64XT/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":"2026-07-09T06:01:09Z","links":{"resolver":"https://pith.science/pith/26WHQHEZQ62JRZPZZESTSH64XT","bundle":"https://pith.science/pith/26WHQHEZQ62JRZPZZESTSH64XT/bundle.json","state":"https://pith.science/pith/26WHQHEZQ62JRZPZZESTSH64XT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/26WHQHEZQ62JRZPZZESTSH64XT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:26WHQHEZQ62JRZPZZESTSH64XT","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":"b8111cd449b80bd67137e8740b863a4128503e333a75f128315bfd9b3cf5bd1c","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2023-09-04T15:03:51Z","title_canon_sha256":"a9314c6f36ef94ad733947dffffb40cf420c4e1bdd7d71bcb2608172925c39e8"},"schema_version":"1.0","source":{"id":"2309.01651","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2309.01651","created_at":"2026-07-05T07:27:26Z"},{"alias_kind":"arxiv_version","alias_value":"2309.01651v2","created_at":"2026-07-05T07:27:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2309.01651","created_at":"2026-07-05T07:27:26Z"},{"alias_kind":"pith_short_12","alias_value":"26WHQHEZQ62J","created_at":"2026-07-05T07:27:26Z"},{"alias_kind":"pith_short_16","alias_value":"26WHQHEZQ62JRZPZ","created_at":"2026-07-05T07:27:26Z"},{"alias_kind":"pith_short_8","alias_value":"26WHQHEZ","created_at":"2026-07-05T07:27:26Z"}],"graph_snapshots":[{"event_id":"sha256:4b89b3dbc452e7eb09f311c98219cd01e1dfcf2d8524216469b6dbc122a3399f","target":"graph","created_at":"2026-07-05T07:27:26Z","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/2309.01651/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Recently the discovery of superconductivity with a critical temperature Tc up to 80 K in Ruddlesden-Popper phases Lan+1NinO3n+1 (n = 2) under pressure has garnered considerable attention. Up to now, the superconductivity was only observed in La3Ni2O7 single crystal grown with the optical-image floating zone furnace under oxygen pressure. It remains to be understood the effect of chemical doping on superconducting La3Ni2O7 as well as other Ruddlesden-Popper phases. Here, we systematically investigate the effect of external pressure and chemical doping on polycrystalline Ruddlesden-Popper phases","authors_text":"Changhua Li, Cuiying Pei, Juefei Wu, Mingxin Zhang, Qi Wang, Shihao Zhu, Weizheng Cao, Yanpeng Qi, Yi Zhao","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2023-09-04T15:03:51Z","title":"Effects of Pressure and Doping on Ruddlesden-Popper phases Lan+1NinO3n+1"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2309.01651","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":"sha256:19fd494a2b2fa26729ca6891b7698cf280cb644816467c0b788ac441f1ca97e9","target":"record","created_at":"2026-07-05T07:27:26Z","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":"b8111cd449b80bd67137e8740b863a4128503e333a75f128315bfd9b3cf5bd1c","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2023-09-04T15:03:51Z","title_canon_sha256":"a9314c6f36ef94ad733947dffffb40cf420c4e1bdd7d71bcb2608172925c39e8"},"schema_version":"1.0","source":{"id":"2309.01651","kind":"arxiv","version":2}},"canonical_sha256":"d7ac781c9987b498e5f9c925391fdcbcf022cbcc58b06fe159a1799575582314","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d7ac781c9987b498e5f9c925391fdcbcf022cbcc58b06fe159a1799575582314","first_computed_at":"2026-07-05T07:27:26.718225Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:27:26.718225Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bnXIrSx/Tnuv6cFfjvnyEoKouYGJei4U2Na6dAtm7ZALi7QdrRMJTHD3l+IfmIsG299pFvArhqE51Oek4OrTAg==","signature_status":"signed_v1","signed_at":"2026-07-05T07:27:26.718904Z","signed_message":"canonical_sha256_bytes"},"source_id":"2309.01651","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:19fd494a2b2fa26729ca6891b7698cf280cb644816467c0b788ac441f1ca97e9","sha256:4b89b3dbc452e7eb09f311c98219cd01e1dfcf2d8524216469b6dbc122a3399f"],"state_sha256":"9f9fbcdcc44e7bfdf1e38a94d4e1e720b26ee2816fad79c2cc42c228542ff3ec"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qIAgJJ5+wVPJupbnlQgF8+bwUhjLKmi29ORNnz5aGkCQ1ASCEvaNnhnalX5SQqoBUbdLCqCwVRDcF007/ZqmCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-09T06:01:09.290090Z","bundle_sha256":"ae18be0c5067d84ecfed914c9481828044d77ad71eaf1727126a885a75c89b61"}}