{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:OLPQKUAFNMK6R5NT4H77EBA3VA","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":"6ff27aa4a9b0190695d87da60a3c13599e9a43a0e2a54fc6e144930d58b8a0fe","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2004-01-30T21:07:03Z","title_canon_sha256":"c2be939ed39d25ae0514130f344f94ed820b944ea29e7dadfa29a52482557142"},"schema_version":"1.0","source":{"id":"cond-mat/0402001","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0402001","created_at":"2026-07-04T16:45:43Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0402001v1","created_at":"2026-07-04T16:45:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0402001","created_at":"2026-07-04T16:45:43Z"},{"alias_kind":"pith_short_12","alias_value":"OLPQKUAFNMK6","created_at":"2026-07-04T16:45:43Z"},{"alias_kind":"pith_short_16","alias_value":"OLPQKUAFNMK6R5NT","created_at":"2026-07-04T16:45:43Z"},{"alias_kind":"pith_short_8","alias_value":"OLPQKUAF","created_at":"2026-07-04T16:45:43Z"}],"graph_snapshots":[{"event_id":"sha256:e2c65d345bdbe4bbb90b0d0e994f7ca07514fc8af7ea262c913a3301b281c4e3","target":"graph","created_at":"2026-07-04T16:45:43Z","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/0402001/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We investigated the effect of alloying on the upper critical field $H_{c2}$ in 12 $MgB_2$ films, in which disorder was introduced by growth, carbon doping or He-ion irradiation, finding a significant $H_{c2}$ enhancement in C-alloyed films, and an anomalous upward curvature of $H_{c2}(T)$. Record high values of $H_{c2}^{\\perp}(4.2) \\simeq 35T$ and $H_{c2}\\|(4.2) \\simeq 51T$ were observed perpendicular and parallel to the ab plane, respectively. The temperature dependence of $H_{c2}(T)$ is described well by a theory of dirty two-gap superconductivity. Extrapolation of the experimental data to T","authors_text":"A. Gurevich, A. Pogrebnyakov, B. Moeckly, B. T. Liu, B. Wilkens, C.B. Eom, C. Ferdeghini, C. Tarantini, D.C. Larbalestier, D. Marre, E. Haanappel, J.E. Giencke, J. Kim, J. M. Redwing, J. Rowell, M.C. Jewell, M. Putti, N. Newman, Qi Li, R. Gandikota, R.K. Singh, R. Vaglio, V. Braccini, V. Ferrando, X.X. Xi, Y. Cui, Y. F.Hu","cross_cats":[],"headline":"","license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2004-01-30T21:07:03Z","title":"High-field superconductivity in alloyed MgB2 thin films"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0402001","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":"sha256:7f8d93db9a3d190aacc627d4475198b9f5ebda6bf25ddf638964269de3def341","target":"record","created_at":"2026-07-04T16:45:43Z","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":"6ff27aa4a9b0190695d87da60a3c13599e9a43a0e2a54fc6e144930d58b8a0fe","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2004-01-30T21:07:03Z","title_canon_sha256":"c2be939ed39d25ae0514130f344f94ed820b944ea29e7dadfa29a52482557142"},"schema_version":"1.0","source":{"id":"cond-mat/0402001","kind":"arxiv","version":1}},"canonical_sha256":"72df0550056b15e8f5b3e1fff2041ba832447a2e1955a6627720d54eb737a88f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"72df0550056b15e8f5b3e1fff2041ba832447a2e1955a6627720d54eb737a88f","first_computed_at":"2026-07-04T16:45:43.714146Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:45:43.714146Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"je/XWduTI02dlKyk30azwr0HsLwDFG4Qm+/JOQsJR5YoFfQURQy2o9fvmVASdqHYb6JIbXUBNRLfn5eFGEJJBg==","signature_status":"signed_v1","signed_at":"2026-07-04T16:45:43.714782Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0402001","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7f8d93db9a3d190aacc627d4475198b9f5ebda6bf25ddf638964269de3def341","sha256:e2c65d345bdbe4bbb90b0d0e994f7ca07514fc8af7ea262c913a3301b281c4e3"],"state_sha256":"b0dfa58b6add31bc410d20844baea56b6d4c0490ec9e88b2c8365ec6e577c2d3"}