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We find that while all these compounds are composed of one-dimensional (1D) Fe chain (or ladder) structures, their electronic structures are not close to be quasi-1D. The magnetic exchange couplings between two nearest-neighbor (NN) chains in 2212\\ast and between two NN two-leg-ladders in 123\\ast are both antiferromagnetic (AFM), which is consistent with the presence of significant third NN AFM coupling, a common feature shared in other iro"},"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":"1202.4016","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2012-02-17T20:56:08Z","cross_cats_sorted":[],"title_canon_sha256":"65f409907b7d185945080e60d41118c3350a311eabc79ede662064f3a3b3c2ac","abstract_canon_sha256":"06ca09e6d56b46b27eeaf4c91bb19b6a83b1636ae3518e732afff1c8583105ba"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:44:07.256698Z","signature_b64":"+Y2iJoGc9LMlPiIr+6S2kA0zK4NIocX7IrkglQdusVHwf7b4fGJA22C2bBngsLZdV/l9EhlbzuclW2BxcayyDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"275708bb6d560edca9e87d5a0f748da63ad866a0a24fd5e93c8bd67d9029bfd8","last_reissued_at":"2026-05-18T02:44:07.256102Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:44:07.256102Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Electronic and Magnetic Structures of Chain Structured Iron Selenide Compounds","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"Chandan Setty, Jiangping Hu, Wei Li, X. 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