{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2001:M3BNUUTEN3KD6EYTUMQ75S72X7","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":"4fc551377d52d93179444a1d577d0509c6f6e3409ca9b97b8c99788639d7dbf3","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2001-04-13T11:26:21Z","title_canon_sha256":"15ce08236a83155c3af3353b9a23074b277a3a37237e7c2b40b737b95da33c24"},"schema_version":"1.0","source":{"id":"cond-mat/0104253","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0104253","created_at":"2026-07-04T16:25:24Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0104253v1","created_at":"2026-07-04T16:25:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0104253","created_at":"2026-07-04T16:25:24Z"},{"alias_kind":"pith_short_12","alias_value":"M3BNUUTEN3KD","created_at":"2026-07-04T16:25:24Z"},{"alias_kind":"pith_short_16","alias_value":"M3BNUUTEN3KD6EYT","created_at":"2026-07-04T16:25:24Z"},{"alias_kind":"pith_short_8","alias_value":"M3BNUUTE","created_at":"2026-07-04T16:25:24Z"}],"graph_snapshots":[{"event_id":"sha256:601268b7d0a6d3517ee4028b82a3df406649e4b90baf4e9f010c65599590cc1b","target":"graph","created_at":"2026-07-04T16:25:24Z","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/0104253/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In order to understand the unexpected superconducting behavior of MgB$_2$ compound we have made electronic structure calculations for MgB$_2$ and closely related systems. Our calculated Debye temperature from the elastic properties indicate that the average phonon frequency is very large in MgB$_2$ compared with other superconducting intermetallics and the exceptionally high $T_c$ in this material can be explained through BCS mechanism only if phonon softening occurs or the phonon modes are highly anisotropic. We identified a doubly-degenerate quasi-two dimensional key-energy band in the vicin","authors_text":"A. Kjekshus, H.Fjellv{\\aa}g, P. Ravindran, P. Vajeeston, R. Vidya","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2001-04-13T11:26:21Z","title":"Detailed electronic structure studies on superconducting MgB$_2$ and related compounds"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0104253","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":"sha256:72c8ae701d2502442524f33676f3234650b63d3fde4e398effa6ca6163010090","target":"record","created_at":"2026-07-04T16:25:24Z","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":"4fc551377d52d93179444a1d577d0509c6f6e3409ca9b97b8c99788639d7dbf3","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2001-04-13T11:26:21Z","title_canon_sha256":"15ce08236a83155c3af3353b9a23074b277a3a37237e7c2b40b737b95da33c24"},"schema_version":"1.0","source":{"id":"cond-mat/0104253","kind":"arxiv","version":1}},"canonical_sha256":"66c2da52646ed43f1313a321fecbfabff5fb7be4f8d93394a64e29f4584d83f5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"66c2da52646ed43f1313a321fecbfabff5fb7be4f8d93394a64e29f4584d83f5","first_computed_at":"2026-07-04T16:25:24.038716Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:25:24.038716Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3qkWk6bzp1m7bRcT3Rl8uuffQU8Z2FvHOAJbWbDPWdbeQgbwbsbZdvUmWe4ex6MDjL7fZD0ucOw7cvv3MdMGCg==","signature_status":"signed_v1","signed_at":"2026-07-04T16:25:24.039170Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0104253","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:72c8ae701d2502442524f33676f3234650b63d3fde4e398effa6ca6163010090","sha256:601268b7d0a6d3517ee4028b82a3df406649e4b90baf4e9f010c65599590cc1b"],"state_sha256":"61931dab270d3c485ee4c83904d2cc1c004a84b5bbf81c208a609fbb5ede4263"}