{"paper":{"title":"Two-dimensional magnetic interactions in LaFeAsO","license":"http://creativecommons.org/licenses/publicdomain/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"1, 2, 2 1 (Ames Laboratory) 2 (Iowa State University) 3 (Oak Ridge National Laboratory) 4 (Rutherford Appleton Laboratory), 2 A. I. Goldman, 2 A. Kreyssig, 2 G. S. Tucker, 2 J. Lamsal, 2 J.-Q. Yan, 2 T. A. Lograsso, 3 S. Calder, 3 T. Guidi, 4 R. W. McCallum, 4 T. Perring, M. Ramazanoglu, R. J. McQueeney1","submitted_at":"2013-03-17T05:50:14Z","abstract_excerpt":"Inelastic neutron scattering measurements demonstrate that the magnetic interactions in antiferromagnetic LaFeAsO are two-dimensional. Spin wave velocities within the Fe layer and the magnitude of the spin gap are similar to the \\textit{A}Fe$_2$As$_2$ based materials. However, the ratio of interlayer and intralayer exchange is found to be less than $\\sim 10^{-4}$ in LaFeAsO, very similar to the cuprates, and $\\sim$ 100 times smaller than that found in \\textit{A}Fe$_2$As$_2$ compounds. The results suggest that the effective dimensionality of the magnetic system is highly variable in the parent "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.4033","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"}