{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:FSJURXUJ46GHNBYHTE2UBG2UX2","short_pith_number":"pith:FSJURXUJ","schema_version":"1.0","canonical_sha256":"2c9348de89e78c7687079935409b54beb0deddf780ee74c80a39be91e0f741f8","source":{"kind":"arxiv","id":"1208.1684","version":1},"attestation_state":"computed","paper":{"title":"Electronic structure of single-crystalline Mg$_x$Al$_{1-x}$B$_2$ probed by x-ray diffraction multipole refinements and polarization-dependent x-ray absorption spectroscopy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"H. v. L\\\"ohneysen, M. Merz, P. Schweiss, S. Schuppler, Th. Wolf","submitted_at":"2012-08-08T15:11:25Z","abstract_excerpt":"X-ray diffraction multipole refinements of single-crystalline Mg$_x$Al$_{1-x}$B$_2$ and polarization-dependent near-edge x-ray absorption fine structure at the B 1$s$ edge reveal a strongly anisotropic electronic structure. Comparing the data for superconducting compounds ($x= 0.8$, 1.0) with those for the non-superconductor ($x=0$) gives direct evidence for a rearrangement of the hybridizations of the boron $p_z$ bonds and underline the importance of holes in the $\\sigma$-bonded covalent $sp^2$ states for the superconducting properties of the diborides. The data indicate that Mg is approximat"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1208.1684","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2012-08-08T15:11:25Z","cross_cats_sorted":[],"title_canon_sha256":"93c939699816b51ddb79c686f1baf3de47d2892b75b6687a83bd6fa564e6f905","abstract_canon_sha256":"2ea2fb16e2591c0a99eb063dc8ab51ebde0bd01365ea4dee6abdf76c32872f2b"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:18:00.607888Z","signature_b64":"LqgeX0uA7bMjUFHIEeSYjF2bknHrnlPeKw0Bf/3+7GDp4vPLM/qvQQP4Rer0GzSo5WqxDX9Jb5HVEcSdNOckCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2c9348de89e78c7687079935409b54beb0deddf780ee74c80a39be91e0f741f8","last_reissued_at":"2026-05-18T01:18:00.607176Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:18:00.607176Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Electronic structure of single-crystalline Mg$_x$Al$_{1-x}$B$_2$ probed by x-ray diffraction multipole refinements and polarization-dependent x-ray absorption spectroscopy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"H. v. L\\\"ohneysen, M. Merz, P. Schweiss, S. Schuppler, Th. Wolf","submitted_at":"2012-08-08T15:11:25Z","abstract_excerpt":"X-ray diffraction multipole refinements of single-crystalline Mg$_x$Al$_{1-x}$B$_2$ and polarization-dependent near-edge x-ray absorption fine structure at the B 1$s$ edge reveal a strongly anisotropic electronic structure. Comparing the data for superconducting compounds ($x= 0.8$, 1.0) with those for the non-superconductor ($x=0$) gives direct evidence for a rearrangement of the hybridizations of the boron $p_z$ bonds and underline the importance of holes in the $\\sigma$-bonded covalent $sp^2$ states for the superconducting properties of the diborides. The data indicate that Mg is approximat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.1684","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1208.1684","created_at":"2026-05-18T01:18:00.607295+00:00"},{"alias_kind":"arxiv_version","alias_value":"1208.1684v1","created_at":"2026-05-18T01:18:00.607295+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.1684","created_at":"2026-05-18T01:18:00.607295+00:00"},{"alias_kind":"pith_short_12","alias_value":"FSJURXUJ46GH","created_at":"2026-05-18T12:27:06.952714+00:00"},{"alias_kind":"pith_short_16","alias_value":"FSJURXUJ46GHNBYH","created_at":"2026-05-18T12:27:06.952714+00:00"},{"alias_kind":"pith_short_8","alias_value":"FSJURXUJ","created_at":"2026-05-18T12:27:06.952714+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/FSJURXUJ46GHNBYHTE2UBG2UX2","json":"https://pith.science/pith/FSJURXUJ46GHNBYHTE2UBG2UX2.json","graph_json":"https://pith.science/api/pith-number/FSJURXUJ46GHNBYHTE2UBG2UX2/graph.json","events_json":"https://pith.science/api/pith-number/FSJURXUJ46GHNBYHTE2UBG2UX2/events.json","paper":"https://pith.science/paper/FSJURXUJ"},"agent_actions":{"view_html":"https://pith.science/pith/FSJURXUJ46GHNBYHTE2UBG2UX2","download_json":"https://pith.science/pith/FSJURXUJ46GHNBYHTE2UBG2UX2.json","view_paper":"https://pith.science/paper/FSJURXUJ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1208.1684&json=true","fetch_graph":"https://pith.science/api/pith-number/FSJURXUJ46GHNBYHTE2UBG2UX2/graph.json","fetch_events":"https://pith.science/api/pith-number/FSJURXUJ46GHNBYHTE2UBG2UX2/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/FSJURXUJ46GHNBYHTE2UBG2UX2/action/timestamp_anchor","attest_storage":"https://pith.science/pith/FSJURXUJ46GHNBYHTE2UBG2UX2/action/storage_attestation","attest_author":"https://pith.science/pith/FSJURXUJ46GHNBYHTE2UBG2UX2/action/author_attestation","sign_citation":"https://pith.science/pith/FSJURXUJ46GHNBYHTE2UBG2UX2/action/citation_signature","submit_replication":"https://pith.science/pith/FSJURXUJ46GHNBYHTE2UBG2UX2/action/replication_record"}},"created_at":"2026-05-18T01:18:00.607295+00:00","updated_at":"2026-05-18T01:18:00.607295+00:00"}