{"paper":{"title":"Revealing the dual nature of magnetism in iron pnictides and iron chalcogenides using x-ray emission spectroscopy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.supr-con","authors_text":"A. Lupascu, D. Casa, G. D. Gu, H. Gretarsson, I. Jarrige, I. R. Fisher, J.-H. Chu, J. S. Wen, Jungho Kim, K. H. Kim, M. Ishikado, N.-L. Wang, R. H. Yuan, S. Khim, S. R. Julian, S. Shamoto, T. Gog, W. Wu, Young-June Kim, Z. G. Chen, Z. J. Xu","submitted_at":"2011-07-12T08:41:47Z","abstract_excerpt":"We report Fe K beta x-ray emission spectroscopy study of local magnetic moments in various iron based superconductors in their paramagnetic phases. Local magnetic moments are found in all samples studied: PrFeAsO, Ba(Fe,Co)2As2, LiFeAs, Fe1+x(Te,Se), and A2Fe4Se5 (A=K, Rb, and Cs). The moment size varies significantly across different families. Specifically, all iron pnictides samples have local moments of about 1 $\\mu_B$/Fe, while FeTe and K2Fe4Se5 families have much larger local moments of ~2$\\mu_B$/Fe, ~3.3$\\mu_B$/Fe, respectively. In addition, we find that neither carrier doping nor temper"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1107.2211","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"}