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In all samples studied the size of the Fe local moment is found to decrease significantly with temperature and goes from ~0.9 \\mu_B at T = 300 K to ~0.45 \\mu_B at T = 70 K. In the collapsed tetragonal (cT) phase of Nd- and Pr-doped samples (T<70K) the local moment is quenched, while the moment remains unchanged for the La-doped sample, which does not show lattice collapse. Our results show that Ca_{1-x}RE_xFe_2As_2 (RE= Pr and Nd) exh"},"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":"1212.5925","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2012-12-24T15:47:13Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"3f33025c235945a5922b64a9d7bf0b0d7567e63552c294b57499250539f755be","abstract_canon_sha256":"5648b1ed073f98cf41725ab3c47decabae013be3344cf96eae667ab8216754f6"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:35:27.714837Z","signature_b64":"anzj1jYTCfIsLtZkvbMPDRSiNUPP9xstnIUNajhYXDnlIJ5jCWj8t9KqS+IE8bNM/ypHMmvdhc0cOW8AcJ3RBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"058fe277c57f74616391ead58cd1d9fa8a4d37d6d69cb8a69534c3a71ea893d6","last_reissued_at":"2026-05-18T03:35:27.713919Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:35:27.713919Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Spin-state transition in the Fe-pnictides","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.supr-con","authors_text":"D. Casa, H. Gretarsson, J. Paglione, Jungho Kim, S. R. Julian, S. R. Saha, T. Drye, T. Gog, W. Wu, Young-June Kim","submitted_at":"2012-12-24T15:47:13Z","abstract_excerpt":"We report a Fe K\\beta x-ray emission spectroscopy study of local magnetic moments in the rare-earth doped iron pnictide Ca_{1-x}RE_xFe_2As_2 (RE=La, Pr, and Nd). In all samples studied the size of the Fe local moment is found to decrease significantly with temperature and goes from ~0.9 \\mu_B at T = 300 K to ~0.45 \\mu_B at T = 70 K. In the collapsed tetragonal (cT) phase of Nd- and Pr-doped samples (T<70K) the local moment is quenched, while the moment remains unchanged for the La-doped sample, which does not show lattice collapse. 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