{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2006:ZRLXM7PAYYPVRI5AWAQQZC335M","short_pith_number":"pith:ZRLXM7PA","canonical_record":{"source":{"id":"cond-mat/0606424","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2006-06-15T17:04:36Z","cross_cats_sorted":[],"title_canon_sha256":"b845c6081834e678d71813acacabb68abf5943d92c2b3d664637821d318b1dd6","abstract_canon_sha256":"5f7c81ceae61c0caaef0535cc00cf29688cceea85ee2f916dba7e90f2fad2efd"},"schema_version":"1.0"},"canonical_sha256":"cc57767de0c61f58a3a0b0210c8b7beb1cef5312cc44b6e95ded091951334fa5","source":{"kind":"arxiv","id":"cond-mat/0606424","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0606424","created_at":"2026-05-18T01:39:45Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0606424v1","created_at":"2026-05-18T01:39:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0606424","created_at":"2026-05-18T01:39:45Z"},{"alias_kind":"pith_short_12","alias_value":"ZRLXM7PAYYPV","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_16","alias_value":"ZRLXM7PAYYPVRI5A","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_8","alias_value":"ZRLXM7PA","created_at":"2026-05-18T12:25:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2006:ZRLXM7PAYYPVRI5AWAQQZC335M","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/0606424","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2006-06-15T17:04:36Z","cross_cats_sorted":[],"title_canon_sha256":"b845c6081834e678d71813acacabb68abf5943d92c2b3d664637821d318b1dd6","abstract_canon_sha256":"5f7c81ceae61c0caaef0535cc00cf29688cceea85ee2f916dba7e90f2fad2efd"},"schema_version":"1.0"},"canonical_sha256":"cc57767de0c61f58a3a0b0210c8b7beb1cef5312cc44b6e95ded091951334fa5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:39:45.453165Z","signature_b64":"A8mZEVQL2AnORDu9hfY+Ob/Lnay+kuGeRwRrHo+AJ+Wjz3nD/WPQ7SvyeB6yEJGJIDc0nZxz9qZkRTIrvBzNCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cc57767de0c61f58a3a0b0210c8b7beb1cef5312cc44b6e95ded091951334fa5","last_reissued_at":"2026-05-18T01:39:45.452602Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:39:45.452602Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/0606424","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":"2026-05-18T01:39:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rs0p4tRAa/GRIMXeAFBNrG1pwVpfNu6elwxSRgTb671jgZiBx1I2aijECrj48ew8aqzc6cTMFcbwqb7s0uMhBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T08:43:48.789579Z"},"content_sha256":"5096913bb5f6cdafb6ba1b684dc98fa298988a4960ef85dd391f6e3f39c6b8ce","schema_version":"1.0","event_id":"sha256:5096913bb5f6cdafb6ba1b684dc98fa298988a4960ef85dd391f6e3f39c6b8ce"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2006:ZRLXM7PAYYPVRI5AWAQQZC335M","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Angle-resolved photoemission study of cobalt oxide superconductor NaxCoO2.yH2O : Observation of the Fermi surface","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"A. Chainani, K. Ishizaka, K. Togano, K. Yamada, P. Badica, S. Shin, S. Tsuda, T. Kiss, T. Shimojima, T. Yokoya","submitted_at":"2006-06-15T17:04:36Z","abstract_excerpt":"Cobalt oxide superconductor NaxCoO2.yH2O is studied by angle-resolved photoemission spectroscopy (ARPES). We report the Fermi surface (FS) topology and electronic structure near the Fermi level (EF) of NaxCoO2.yH2O. Our result indicates the presence of the hexagonal FS centered at G point, while the small pocket FSs along G-K direction are absent similar to NaxCoO2. The top of the eg' band, which is expected in band calculations to form the small pocket FSs, extends to within 20 - 50 meV below EF, more closer to EF than in NaxCoO2. We discuss its possible role in superconductivity, comparing w"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0606424","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":""},"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":"2026-05-18T01:39:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QoBQgPIKDXmHBiPwmVWdKRZEmkByqoVYxPimvLVJz1ZdxkgKWg7dUrX4Rq4AaCPCTkyf83QAyHnQES5vJM1aBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T08:43:48.790117Z"},"content_sha256":"9c2f9bf4cc74064d59edb4a8b409eb3d4ac96ed64747c92ddeefe4897ceb18ce","schema_version":"1.0","event_id":"sha256:9c2f9bf4cc74064d59edb4a8b409eb3d4ac96ed64747c92ddeefe4897ceb18ce"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZRLXM7PAYYPVRI5AWAQQZC335M/bundle.json","state_url":"https://pith.science/pith/ZRLXM7PAYYPVRI5AWAQQZC335M/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZRLXM7PAYYPVRI5AWAQQZC335M/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":"2026-05-23T08:43:48Z","links":{"resolver":"https://pith.science/pith/ZRLXM7PAYYPVRI5AWAQQZC335M","bundle":"https://pith.science/pith/ZRLXM7PAYYPVRI5AWAQQZC335M/bundle.json","state":"https://pith.science/pith/ZRLXM7PAYYPVRI5AWAQQZC335M/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZRLXM7PAYYPVRI5AWAQQZC335M/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:ZRLXM7PAYYPVRI5AWAQQZC335M","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":"5f7c81ceae61c0caaef0535cc00cf29688cceea85ee2f916dba7e90f2fad2efd","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2006-06-15T17:04:36Z","title_canon_sha256":"b845c6081834e678d71813acacabb68abf5943d92c2b3d664637821d318b1dd6"},"schema_version":"1.0","source":{"id":"cond-mat/0606424","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0606424","created_at":"2026-05-18T01:39:45Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0606424v1","created_at":"2026-05-18T01:39:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0606424","created_at":"2026-05-18T01:39:45Z"},{"alias_kind":"pith_short_12","alias_value":"ZRLXM7PAYYPV","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_16","alias_value":"ZRLXM7PAYYPVRI5A","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_8","alias_value":"ZRLXM7PA","created_at":"2026-05-18T12:25:54Z"}],"graph_snapshots":[{"event_id":"sha256:9c2f9bf4cc74064d59edb4a8b409eb3d4ac96ed64747c92ddeefe4897ceb18ce","target":"graph","created_at":"2026-05-18T01:39:45Z","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":"Cobalt oxide superconductor NaxCoO2.yH2O is studied by angle-resolved photoemission spectroscopy (ARPES). We report the Fermi surface (FS) topology and electronic structure near the Fermi level (EF) of NaxCoO2.yH2O. Our result indicates the presence of the hexagonal FS centered at G point, while the small pocket FSs along G-K direction are absent similar to NaxCoO2. The top of the eg' band, which is expected in band calculations to form the small pocket FSs, extends to within 20 - 50 meV below EF, more closer to EF than in NaxCoO2. We discuss its possible role in superconductivity, comparing w","authors_text":"A. Chainani, K. Ishizaka, K. Togano, K. Yamada, P. Badica, S. Shin, S. Tsuda, T. Kiss, T. Shimojima, T. Yokoya","cross_cats":[],"headline":"","license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2006-06-15T17:04:36Z","title":"Angle-resolved photoemission study of cobalt oxide superconductor NaxCoO2.yH2O : Observation of the Fermi surface"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0606424","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":"sha256:5096913bb5f6cdafb6ba1b684dc98fa298988a4960ef85dd391f6e3f39c6b8ce","target":"record","created_at":"2026-05-18T01:39:45Z","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":"5f7c81ceae61c0caaef0535cc00cf29688cceea85ee2f916dba7e90f2fad2efd","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2006-06-15T17:04:36Z","title_canon_sha256":"b845c6081834e678d71813acacabb68abf5943d92c2b3d664637821d318b1dd6"},"schema_version":"1.0","source":{"id":"cond-mat/0606424","kind":"arxiv","version":1}},"canonical_sha256":"cc57767de0c61f58a3a0b0210c8b7beb1cef5312cc44b6e95ded091951334fa5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cc57767de0c61f58a3a0b0210c8b7beb1cef5312cc44b6e95ded091951334fa5","first_computed_at":"2026-05-18T01:39:45.452602Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:39:45.452602Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"A8mZEVQL2AnORDu9hfY+Ob/Lnay+kuGeRwRrHo+AJ+Wjz3nD/WPQ7SvyeB6yEJGJIDc0nZxz9qZkRTIrvBzNCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:39:45.453165Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0606424","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5096913bb5f6cdafb6ba1b684dc98fa298988a4960ef85dd391f6e3f39c6b8ce","sha256:9c2f9bf4cc74064d59edb4a8b409eb3d4ac96ed64747c92ddeefe4897ceb18ce"],"state_sha256":"505cc601509907580081f19e0f4a7753205d794e077d861bd86def19ff455ff2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KAiHqzDjwXy9kiA1SAtZ+jOQEuVnMCffNpB0PbTGqtbdD3KQ7SkjrHj170XBTsfUMxn6UgW0sPCFcPeMswPxDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-23T08:43:48.793507Z","bundle_sha256":"36e13387bb380f10302adf18c4fecd349073a0905211a119d7fe953832fabb6e"}}