{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:5N3BYNNKN46BT52HUSDEDFCGLI","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":"8fedbc933c10b9ba1e73acb02cb6f34f5ee87d25211309bf02cb750a92e01765","cross_cats_sorted":["cond-mat.str-el"],"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2002-08-03T00:21:09Z","title_canon_sha256":"a04e9d25e8dea375d6dc124d52cbf8fb590eba4b3e6e0e2d111ef8d13eb2e4ca"},"schema_version":"1.0","source":{"id":"cond-mat/0208053","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0208053","created_at":"2026-07-04T16:32:43Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0208053v1","created_at":"2026-07-04T16:32:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0208053","created_at":"2026-07-04T16:32:43Z"},{"alias_kind":"pith_short_12","alias_value":"5N3BYNNKN46B","created_at":"2026-07-04T16:32:43Z"},{"alias_kind":"pith_short_16","alias_value":"5N3BYNNKN46BT52H","created_at":"2026-07-04T16:32:43Z"},{"alias_kind":"pith_short_8","alias_value":"5N3BYNNK","created_at":"2026-07-04T16:32:43Z"}],"graph_snapshots":[{"event_id":"sha256:8f5b05135d6620ec98a45db8d296db579e086e8d05ef7c7549d50f34491385ce","target":"graph","created_at":"2026-07-04T16:32:43Z","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/cond-mat/0208053/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We have used a scanning tunneling microscope to demonstrate that a single CuO_2 plane can form a stable and atomically ordered layer at the surface of Bi_2Sr_2CaCu_2O_{8+delta}. In contrast to previous studies on high-T_c surfaces, the CuO_2-terminated surface exhibits a strongly suppressed tunneling conductance at low voltages. We consider a number of different explanations for this phenomena and propose that it may be caused by how the orbital symmetry of the CuO_2 plane's electronic states affects the tunneling process.","authors_text":"A. Yazdani (University of Illinois at Urbana/Champaign), D.J. Hornbaker, J.N. Eckstein, S. Misra, S. Oh, T. DiLuccio","cross_cats":["cond-mat.str-el"],"headline":"","license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2002-08-03T00:21:09Z","title":"Atomic Scale Imaging and Spectroscopy of a CuO_2 Plane at the Surface of Bi_2Sr_2CaCu_2O_{8+delta}"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0208053","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":"sha256:661d74eab5b49d335d78d4d3d4fba89e6417e789ba6e6ae38d9100f6e245b695","target":"record","created_at":"2026-07-04T16:32:43Z","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":"8fedbc933c10b9ba1e73acb02cb6f34f5ee87d25211309bf02cb750a92e01765","cross_cats_sorted":["cond-mat.str-el"],"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2002-08-03T00:21:09Z","title_canon_sha256":"a04e9d25e8dea375d6dc124d52cbf8fb590eba4b3e6e0e2d111ef8d13eb2e4ca"},"schema_version":"1.0","source":{"id":"cond-mat/0208053","kind":"arxiv","version":1}},"canonical_sha256":"eb761c35aa6f3c19f747a4864194465a2c875934ee6c72b578c8debbc4a5ec22","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"eb761c35aa6f3c19f747a4864194465a2c875934ee6c72b578c8debbc4a5ec22","first_computed_at":"2026-07-04T16:32:43.858876Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:32:43.858876Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cuXxjL1p8YUNL8JUHXViDJv9YjL8FPY3qwD3SVHAgQYPHHY9YfoexxTt4+MJt6limFLvMexwYzgrGNRT1Jn9CQ==","signature_status":"signed_v1","signed_at":"2026-07-04T16:32:43.859283Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0208053","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:661d74eab5b49d335d78d4d3d4fba89e6417e789ba6e6ae38d9100f6e245b695","sha256:8f5b05135d6620ec98a45db8d296db579e086e8d05ef7c7549d50f34491385ce"],"state_sha256":"46edb53cc7b4cf0fe15c5ca0653104074c991184fcaa6b809122302efc269acd"}