{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2005:LXGJNMXRFUVWEAXISGXCAP7XAR","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":"4b8e272a4c2c94a29dc00054b51bc6dcdae32ab00508ae5b7abc8acb80ca968c","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2005-09-21T14:26:26Z","title_canon_sha256":"3c84209ec9d33fbd682fe7ddc3d28759b7aca54338e29e3ca221e2a03117ea90"},"schema_version":"1.0","source":{"id":"cond-mat/0509547","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0509547","created_at":"2026-05-18T01:06:52Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0509547v1","created_at":"2026-05-18T01:06:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0509547","created_at":"2026-05-18T01:06:52Z"},{"alias_kind":"pith_short_12","alias_value":"LXGJNMXRFUVW","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"LXGJNMXRFUVWEAXI","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"LXGJNMXR","created_at":"2026-05-18T12:25:53Z"}],"graph_snapshots":[{"event_id":"sha256:9d24be208fe707213e1363415664cda44677aa5641224cd5fb7de8d71280b2c4","target":"graph","created_at":"2026-05-18T01:06:52Z","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"},"paper":{"abstract_excerpt":"We present first measurements of quantum oscillations in the layered oxide superconductor\n Ag5Pb2O6. From a detailed angular and temperature dependent study of the dHvA effect we determine the electronic structure and demonstrate that the electron masses are very light, m^* is approximately equalt to 1.2 m_e. The Fermi surface we observe is essentially that expected of nearly-free electrons - establishing\n Ag5Pb2O6 as the first known example of a monovalent, nearly-free electron superconductor at ambient pressure.","authors_text":"Christoph Bergemann, Mike Sutherland, P.D.A. Mann, Shingo Yonezawa, Yoshiteru Maeno","cross_cats":[],"headline":"","license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2005-09-21T14:26:26Z","title":"Nearly free electrons in the layered oxide superconductor Ag5Pb2O6"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0509547","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:b2ee8438f302bac374954feac9df21bd3dcbb8b12e4c395ac69f0d9d856f9662","target":"record","created_at":"2026-05-18T01:06:52Z","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":"4b8e272a4c2c94a29dc00054b51bc6dcdae32ab00508ae5b7abc8acb80ca968c","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2005-09-21T14:26:26Z","title_canon_sha256":"3c84209ec9d33fbd682fe7ddc3d28759b7aca54338e29e3ca221e2a03117ea90"},"schema_version":"1.0","source":{"id":"cond-mat/0509547","kind":"arxiv","version":1}},"canonical_sha256":"5dcc96b2f12d2b6202e891ae203ff7045e0e96c3c9292bd9d2b7698ccadf58af","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5dcc96b2f12d2b6202e891ae203ff7045e0e96c3c9292bd9d2b7698ccadf58af","first_computed_at":"2026-05-18T01:06:52.231763Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:06:52.231763Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sNMM3rn+D1XHb+dyCqMArITm9YjfQVItxVV8ibwfpIzTvnXuS6XV2MBXM8zg1V0Ci4t/tNoR5Xb6KWDMtXPbAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:06:52.232258Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0509547","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b2ee8438f302bac374954feac9df21bd3dcbb8b12e4c395ac69f0d9d856f9662","sha256:9d24be208fe707213e1363415664cda44677aa5641224cd5fb7de8d71280b2c4"],"state_sha256":"8d3fc746dc889a17a3f8c1b1bc02bb98db87732c1ba28e16e865eb04522d15da"}