{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:OXDPVCVMYPHAV5H3ANQWQ34XZB","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":"a7bb5b6c62bd126e5ba2c6f02d2dfda8f5f73859bc73e1d13f3103c8c0413983","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2026-05-18T05:54:42Z","title_canon_sha256":"b9c84a9b97192cf58b658746a466e98e1c3b4aadbbe6b0ca2124902a5af0385f"},"schema_version":"1.0","source":{"id":"2605.17890","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.17890","created_at":"2026-05-20T00:05:04Z"},{"alias_kind":"arxiv_version","alias_value":"2605.17890v1","created_at":"2026-05-20T00:05:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.17890","created_at":"2026-05-20T00:05:04Z"},{"alias_kind":"pith_short_12","alias_value":"OXDPVCVMYPHA","created_at":"2026-05-20T00:05:04Z"},{"alias_kind":"pith_short_16","alias_value":"OXDPVCVMYPHAV5H3","created_at":"2026-05-20T00:05:04Z"},{"alias_kind":"pith_short_8","alias_value":"OXDPVCVM","created_at":"2026-05-20T00:05:04Z"}],"graph_snapshots":[{"event_id":"sha256:fd78ec122071cdfe7468c8b4cfb55a5ac06d763ee4c142f72c0bcc4e41a22d6a","target":"graph","created_at":"2026-05-20T00:05:04Z","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/2605.17890/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Crystalline rhombohedral multilayer graphene (RMG) has emerged as an ideal platform for studying unconventional superconductivity. Here, we report the observation of superconductivity in moir\\'eless rhombohedral heptalayer graphene (RHG) at zero magnetic field. The superconducting phases emerge at low displacement electric fields (|D| < 0.2 V/nm) and are symmetrically distributed about D = 0, with one robust state exhibiting zero resistance and two weaker superconducting features. Comparisons with rhombohedral pentalayer graphene (RPG) reveal distinct perpendicular magnetic-field responses, an","authors_text":"Canhua Liu, Chenyu Zhang, Chuanqi Zheng, Chushan Li, Dandan Guan, Guorui Chen, Hao Yang, Hao Zheng, Jinfeng Jia, Kenji Watanabe, Liang Liu, Shiyong Wang, Takashi Taniguchi, Tingxin Li, Xiaoxue Liu, Yaoyi Li, Zhiwen Shi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2026-05-18T05:54:42Z","title":"Multiple Superconducting Phases in Rhombohedral Heptalayer Graphene"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.17890","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":"sha256:153aa0192031531ba1016c9212e87946eb29a901e748b2788285e32a6dab8cdb","target":"record","created_at":"2026-05-20T00:05:04Z","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":"a7bb5b6c62bd126e5ba2c6f02d2dfda8f5f73859bc73e1d13f3103c8c0413983","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2026-05-18T05:54:42Z","title_canon_sha256":"b9c84a9b97192cf58b658746a466e98e1c3b4aadbbe6b0ca2124902a5af0385f"},"schema_version":"1.0","source":{"id":"2605.17890","kind":"arxiv","version":1}},"canonical_sha256":"75c6fa8aacc3ce0af4fb0361686f97c86156cb522bc26603d91c5b4d356426c1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"75c6fa8aacc3ce0af4fb0361686f97c86156cb522bc26603d91c5b4d356426c1","first_computed_at":"2026-05-20T00:05:04.100275Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-20T00:05:04.100275Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"lF+ikVXv+db804vLePGgPSKQt8eWlLuRUC/CtAPbi6SGutMjALVijrt071+75fSQw2lOraK5sySJg63/cE+uBg==","signature_status":"signed_v1","signed_at":"2026-05-20T00:05:04.101156Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.17890","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:153aa0192031531ba1016c9212e87946eb29a901e748b2788285e32a6dab8cdb","sha256:fd78ec122071cdfe7468c8b4cfb55a5ac06d763ee4c142f72c0bcc4e41a22d6a"],"state_sha256":"91a1995316afb894af4e32b1e30992998315dcf79d0d1ebdbce30d546e480eb2"}