{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:JQD2VPOXBWLOJ2PLFHPMNQS5YS","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":"dda2b8f894af1f6cfe7cabae4d289dd391e903f9bdeacf92888e4ab3bf87287d","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2006-10-03T17:00:37Z","title_canon_sha256":"0fd50f236bc30e6efb0728121bed7afbdec87d18f8e296a7aa26d6efddbc319d"},"schema_version":"1.0","source":{"id":"cond-mat/0610057","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0610057","created_at":"2026-05-18T01:39:42Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0610057v2","created_at":"2026-05-18T01:39:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0610057","created_at":"2026-05-18T01:39:42Z"},{"alias_kind":"pith_short_12","alias_value":"JQD2VPOXBWLO","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_16","alias_value":"JQD2VPOXBWLOJ2PL","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_8","alias_value":"JQD2VPOX","created_at":"2026-05-18T12:25:54Z"}],"graph_snapshots":[{"event_id":"sha256:d96171d6f0f2f2ef988d61f35f4672dd91ce4962c81cd6f5f55d247a0b440f4f","target":"graph","created_at":"2026-05-18T01:39:42Z","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 show that a recently predicted layered phase of lithium monoboride, Li2B2, combines the key mechanism for strong electron-phonon coupling in MgB2 (i.e., interaction of covalent B sigma bands with B bond-stretching modes) with the dominant coupling mechanism in CaC6 (i.e., interaction of free-electron-like interlayer states with soft intercalant modes). Yet, surprisingly, the electron-phonon coupling in Li2B2 is calculated to be weaker than in either MgB2 or CaC6. We demonstrate that this is due to the accidental absence of B pi states at the Fermi level in Li2B2. In MgB2, the pi electrons p","authors_text":"Amy Y. Liu, I. I. Mazin","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2006-10-03T17:00:37Z","title":"Combining the advantages of superconducting MgB2 and CaC6 in one material: suggestions from first-principles calculations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0610057","kind":"arxiv","version":2},"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:fd849f81fa5f45907d3d762af304c027c18393aaea1443db5e634d45a543de26","target":"record","created_at":"2026-05-18T01:39:42Z","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":"dda2b8f894af1f6cfe7cabae4d289dd391e903f9bdeacf92888e4ab3bf87287d","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"","primary_cat":"cond-mat.supr-con","submitted_at":"2006-10-03T17:00:37Z","title_canon_sha256":"0fd50f236bc30e6efb0728121bed7afbdec87d18f8e296a7aa26d6efddbc319d"},"schema_version":"1.0","source":{"id":"cond-mat/0610057","kind":"arxiv","version":2}},"canonical_sha256":"4c07aabdd70d96e4e9eb29dec6c25dc48c72eb0e0a387cedbbcc3ea597d6e9b3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4c07aabdd70d96e4e9eb29dec6c25dc48c72eb0e0a387cedbbcc3ea597d6e9b3","first_computed_at":"2026-05-18T01:39:42.793358Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:39:42.793358Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"o9UePHx0H0odHkYGJ/Mh4zP2hfRvaRIJTCSDCFgtgSoGhpfsv2z8Zik1o9ZwbJmI6KcjurOnPiH99MpwEONwDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:39:42.793968Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0610057","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fd849f81fa5f45907d3d762af304c027c18393aaea1443db5e634d45a543de26","sha256:d96171d6f0f2f2ef988d61f35f4672dd91ce4962c81cd6f5f55d247a0b440f4f"],"state_sha256":"7fa7d17f8d8e2963b32b2dbe2833d07e6e6e9feca3b7b06c759baeab1c2ad507"}