{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:4PSM6FKUZWP5RONHYA2DJQK7EA","short_pith_number":"pith:4PSM6FKU","schema_version":"1.0","canonical_sha256":"e3e4cf1554cd9fd8b9a7c03434c15f203ca1f06daff9ff01cb94c7c7d3927e22","source":{"kind":"arxiv","id":"1205.1693","version":1},"attestation_state":"computed","paper":{"title":"Electronic structure of single-crystalline Sr(Fe$_{1-x}$Co$_x$)$_2$As$_2$ probed by x-ray absorption spectroscopy: Evidence for isovalent substitution of Fe$^{2+}$ by Co$^{2+}$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"F. Eilers, H. v. L\\\"ohneysen, M. Merz, P. Nagel, S. Schuppler, Th. Wolf","submitted_at":"2012-05-08T13:24:13Z","abstract_excerpt":"The substitutional dependence of valence and spin-state configurations of Sr(Fe$_{1-x}$Co$_x$)$_2$As$_2$ ($x =$ 0, 0.05, 0.11, 0.17, and 0.38) is investigated with near-edge x-ray absorption fine structure at the $L_{2,3}$ edges of Fe, Co, and As. The present data provide direct spectroscopic evidence for an effectively isovalent substitution of Fe$^{2+}$ by Co$^{2+}$, which is in contrast to the widely assumed Co-induced electron-doping effect. Moreover, the data reveal that not only does the Fe valency remain completely unaffected across the entire doping range, but so do the Co and As valen"},"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":"1205.1693","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2012-05-08T13:24:13Z","cross_cats_sorted":[],"title_canon_sha256":"da43ae81be622400f890f84c32158d377b2ed99896094f1126afa3cefadafc38","abstract_canon_sha256":"ebc39efe879bd59c37d53c5bec32ecda87b50d21d3990b3d08e6301a256a2d16"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:46:16.621299Z","signature_b64":"mpCjKBealyFFyk55aebhuDy6lJGg27FfuuuJirVIBylSq2WRpidhs/mTwtwip05VwvVniekz2Ji7T7j0Ybc8Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e3e4cf1554cd9fd8b9a7c03434c15f203ca1f06daff9ff01cb94c7c7d3927e22","last_reissued_at":"2026-05-18T03:46:16.620621Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:46:16.620621Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Electronic structure of single-crystalline Sr(Fe$_{1-x}$Co$_x$)$_2$As$_2$ probed by x-ray absorption spectroscopy: Evidence for isovalent substitution of Fe$^{2+}$ by Co$^{2+}$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"F. Eilers, H. v. L\\\"ohneysen, M. Merz, P. Nagel, S. Schuppler, Th. Wolf","submitted_at":"2012-05-08T13:24:13Z","abstract_excerpt":"The substitutional dependence of valence and spin-state configurations of Sr(Fe$_{1-x}$Co$_x$)$_2$As$_2$ ($x =$ 0, 0.05, 0.11, 0.17, and 0.38) is investigated with near-edge x-ray absorption fine structure at the $L_{2,3}$ edges of Fe, Co, and As. The present data provide direct spectroscopic evidence for an effectively isovalent substitution of Fe$^{2+}$ by Co$^{2+}$, which is in contrast to the widely assumed Co-induced electron-doping effect. Moreover, the data reveal that not only does the Fe valency remain completely unaffected across the entire doping range, but so do the Co and As valen"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.1693","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":"1205.1693","created_at":"2026-05-18T03:46:16.620717+00:00"},{"alias_kind":"arxiv_version","alias_value":"1205.1693v1","created_at":"2026-05-18T03:46:16.620717+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.1693","created_at":"2026-05-18T03:46:16.620717+00:00"},{"alias_kind":"pith_short_12","alias_value":"4PSM6FKUZWP5","created_at":"2026-05-18T12:26:53.410803+00:00"},{"alias_kind":"pith_short_16","alias_value":"4PSM6FKUZWP5RONH","created_at":"2026-05-18T12:26:53.410803+00:00"},{"alias_kind":"pith_short_8","alias_value":"4PSM6FKU","created_at":"2026-05-18T12:26:53.410803+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/4PSM6FKUZWP5RONHYA2DJQK7EA","json":"https://pith.science/pith/4PSM6FKUZWP5RONHYA2DJQK7EA.json","graph_json":"https://pith.science/api/pith-number/4PSM6FKUZWP5RONHYA2DJQK7EA/graph.json","events_json":"https://pith.science/api/pith-number/4PSM6FKUZWP5RONHYA2DJQK7EA/events.json","paper":"https://pith.science/paper/4PSM6FKU"},"agent_actions":{"view_html":"https://pith.science/pith/4PSM6FKUZWP5RONHYA2DJQK7EA","download_json":"https://pith.science/pith/4PSM6FKUZWP5RONHYA2DJQK7EA.json","view_paper":"https://pith.science/paper/4PSM6FKU","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1205.1693&json=true","fetch_graph":"https://pith.science/api/pith-number/4PSM6FKUZWP5RONHYA2DJQK7EA/graph.json","fetch_events":"https://pith.science/api/pith-number/4PSM6FKUZWP5RONHYA2DJQK7EA/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/4PSM6FKUZWP5RONHYA2DJQK7EA/action/timestamp_anchor","attest_storage":"https://pith.science/pith/4PSM6FKUZWP5RONHYA2DJQK7EA/action/storage_attestation","attest_author":"https://pith.science/pith/4PSM6FKUZWP5RONHYA2DJQK7EA/action/author_attestation","sign_citation":"https://pith.science/pith/4PSM6FKUZWP5RONHYA2DJQK7EA/action/citation_signature","submit_replication":"https://pith.science/pith/4PSM6FKUZWP5RONHYA2DJQK7EA/action/replication_record"}},"created_at":"2026-05-18T03:46:16.620717+00:00","updated_at":"2026-05-18T03:46:16.620717+00:00"}