{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2003:IGDHVKH73TXO4DEZTGQOQ2EMIB","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":"9e7fdaf1738541b66d3a0f1ad672fa72ef43869dcf2aa4342e21594e402b2f2b","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2003-08-05T11:43:34Z","title_canon_sha256":"95bd45ecb7936dc5b4425900d8bac2b781daa4901ac654639bcaea2be9c22d9c"},"schema_version":"1.0","source":{"id":"cond-mat/0308081","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0308081","created_at":"2026-05-18T01:39:59Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0308081v1","created_at":"2026-05-18T01:39:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0308081","created_at":"2026-05-18T01:39:59Z"},{"alias_kind":"pith_short_12","alias_value":"IGDHVKH73TXO","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"IGDHVKH73TXO4DEZ","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"IGDHVKH7","created_at":"2026-05-18T12:25:52Z"}],"graph_snapshots":[{"event_id":"sha256:f80ac8c8727cc5807ff76fc0c67de3697af421b1ee9ef96b9505b761c7b4b91d","target":"graph","created_at":"2026-05-18T01:39:59Z","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":"X-ray absorption spectroscopy and optical reflectance measurements have been carried out to elucidate the evolution of the electronic structure in (Mg$_{1-x}$Al$_{x}$)B$_{2}$ for $\\emph{x}$ = 0.0,0.1, 0.2, 0.3, and 0.4. The important role of B 2$\\emph{p}$ $\\sigma$ hole states to superconductivity has been identified, and the decrease in the hole carrier number is $\\emph{quantitatively}$ determined. The rate of the decrease in the hole concentration agree well with the theoretical calculations. On the other hand,while the evolution of the electronic structure is gradual through the doping range","authors_text":"C. U. Jung, H. D. Yang, H. L. Liu, J. M. Chen, J.-Y. Lin, Min-Seok Park, M. X. Kuo, P. L. Ho, Sung-Ik Lee","cross_cats":[],"headline":"","license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2003-08-05T11:43:34Z","title":"X-ray absorption and optical spectroscopy studies of (Mg$_{1-x}$Al$_x$)B$_2$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0308081","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":"sha256:092b337334a0c3d8fedc9afebf67ad411b4642b742ba65f757b59347931bd373","target":"record","created_at":"2026-05-18T01:39:59Z","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":"9e7fdaf1738541b66d3a0f1ad672fa72ef43869dcf2aa4342e21594e402b2f2b","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2003-08-05T11:43:34Z","title_canon_sha256":"95bd45ecb7936dc5b4425900d8bac2b781daa4901ac654639bcaea2be9c22d9c"},"schema_version":"1.0","source":{"id":"cond-mat/0308081","kind":"arxiv","version":1}},"canonical_sha256":"41867aa8ffdceeee0c9999a0e8688c4048380f45a23274b421568320df5611e5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"41867aa8ffdceeee0c9999a0e8688c4048380f45a23274b421568320df5611e5","first_computed_at":"2026-05-18T01:39:59.443302Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:39:59.443302Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"m50UXRsBwkxEqcyW1tM0faXCS1yngM5++AafYuxJI1xg/U+M5QAQXG8XS3gbiyqrZ7DJJ1yiGOX9EB673h4qCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:39:59.444017Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0308081","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:092b337334a0c3d8fedc9afebf67ad411b4642b742ba65f757b59347931bd373","sha256:f80ac8c8727cc5807ff76fc0c67de3697af421b1ee9ef96b9505b761c7b4b91d"],"state_sha256":"915bfc4ab6dfee4bc561b4cb0a55d96060f3b836f0acad351d45fecef88df541"}