{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2010:J5QJYHIXB5WKNF7JOSF63QBBPC","short_pith_number":"pith:J5QJYHIX","schema_version":"1.0","canonical_sha256":"4f609c1d170f6ca697e9748bedc02178a0dbca8ea3f1d33edb0a6f94863c3c0d","source":{"kind":"arxiv","id":"1009.0271","version":1},"attestation_state":"computed","paper":{"title":"Uniaxial \"nematic-like\" electronic structure and Fermi surface of untwinned CaFe2As2","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.supr-con","authors_text":"Arun Bansil, Bernardo Barbiellini, Daniel S. Dessau, Eli Rotenberg, Eric D. Bauer, Filip Ronning, Hsin Lin, Matti Lindroos, Qiang Wang, Robert S. Markiewicz, Zhe Sun","submitted_at":"2010-09-01T20:08:04Z","abstract_excerpt":"Obtaining the electronic structure of the newly discovered iron-based superconductors is the key to understanding the mechanism of their high-temperature superconductivity. We used angle-resolved photoemission spectroscopy (ARPES) to make direct measurements of the electronic structure and Fermi surface (FS) of the untwinned uniaxial state of CaFe2As2, the parent compound of iron-based superconductors. We observed unequal dispersions and FS geometries along the orthogonal Fe-Fe bond directions. More importantly, unidirectional straight and flat FS segments are observed near the zone center, wh"},"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":"1009.0271","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2010-09-01T20:08:04Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"895578f2b7dc2698bf1ae89b8f318c2a2d59a35b58282ad9e24b2bbc3d9e48d0","abstract_canon_sha256":"06b0c32e6346dc0041cc0993aaebfa10f2b648a298094f76f9a60baedbd8333b"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:41:27.043946Z","signature_b64":"aJiuq33gw79zAeU+47Z32Erw6eY2XXaBtv+fqrOHMGWW7AOGcFiBfRSNXsdkQauKTt2uox21WbyBbmTUps7BCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4f609c1d170f6ca697e9748bedc02178a0dbca8ea3f1d33edb0a6f94863c3c0d","last_reissued_at":"2026-05-18T04:41:27.043360Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:41:27.043360Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Uniaxial \"nematic-like\" electronic structure and Fermi surface of untwinned CaFe2As2","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.supr-con","authors_text":"Arun Bansil, Bernardo Barbiellini, Daniel S. Dessau, Eli Rotenberg, Eric D. Bauer, Filip Ronning, Hsin Lin, Matti Lindroos, Qiang Wang, Robert S. Markiewicz, Zhe Sun","submitted_at":"2010-09-01T20:08:04Z","abstract_excerpt":"Obtaining the electronic structure of the newly discovered iron-based superconductors is the key to understanding the mechanism of their high-temperature superconductivity. We used angle-resolved photoemission spectroscopy (ARPES) to make direct measurements of the electronic structure and Fermi surface (FS) of the untwinned uniaxial state of CaFe2As2, the parent compound of iron-based superconductors. We observed unequal dispersions and FS geometries along the orthogonal Fe-Fe bond directions. More importantly, unidirectional straight and flat FS segments are observed near the zone center, wh"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1009.0271","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":"1009.0271","created_at":"2026-05-18T04:41:27.043450+00:00"},{"alias_kind":"arxiv_version","alias_value":"1009.0271v1","created_at":"2026-05-18T04:41:27.043450+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1009.0271","created_at":"2026-05-18T04:41:27.043450+00:00"},{"alias_kind":"pith_short_12","alias_value":"J5QJYHIXB5WK","created_at":"2026-05-18T12:26:09.077623+00:00"},{"alias_kind":"pith_short_16","alias_value":"J5QJYHIXB5WKNF7J","created_at":"2026-05-18T12:26:09.077623+00:00"},{"alias_kind":"pith_short_8","alias_value":"J5QJYHIX","created_at":"2026-05-18T12:26:09.077623+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/J5QJYHIXB5WKNF7JOSF63QBBPC","json":"https://pith.science/pith/J5QJYHIXB5WKNF7JOSF63QBBPC.json","graph_json":"https://pith.science/api/pith-number/J5QJYHIXB5WKNF7JOSF63QBBPC/graph.json","events_json":"https://pith.science/api/pith-number/J5QJYHIXB5WKNF7JOSF63QBBPC/events.json","paper":"https://pith.science/paper/J5QJYHIX"},"agent_actions":{"view_html":"https://pith.science/pith/J5QJYHIXB5WKNF7JOSF63QBBPC","download_json":"https://pith.science/pith/J5QJYHIXB5WKNF7JOSF63QBBPC.json","view_paper":"https://pith.science/paper/J5QJYHIX","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1009.0271&json=true","fetch_graph":"https://pith.science/api/pith-number/J5QJYHIXB5WKNF7JOSF63QBBPC/graph.json","fetch_events":"https://pith.science/api/pith-number/J5QJYHIXB5WKNF7JOSF63QBBPC/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/J5QJYHIXB5WKNF7JOSF63QBBPC/action/timestamp_anchor","attest_storage":"https://pith.science/pith/J5QJYHIXB5WKNF7JOSF63QBBPC/action/storage_attestation","attest_author":"https://pith.science/pith/J5QJYHIXB5WKNF7JOSF63QBBPC/action/author_attestation","sign_citation":"https://pith.science/pith/J5QJYHIXB5WKNF7JOSF63QBBPC/action/citation_signature","submit_replication":"https://pith.science/pith/J5QJYHIXB5WKNF7JOSF63QBBPC/action/replication_record"}},"created_at":"2026-05-18T04:41:27.043450+00:00","updated_at":"2026-05-18T04:41:27.043450+00:00"}