{"paper":{"title":"Probing the susceptibility $\\chi'(q)$ in cuprates using Ni impurities","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"Charles P. Slichter (University of Illinois at Urbana-Champaign), Dirk K. Morr, Joerg Schmalian, Raivo Stern","submitted_at":"1998-01-29T19:16:10Z","abstract_excerpt":"Recent NMR experiments on $YBa_2(Cu_{1-x}Ni_x)_3O_{6+\\delta}$ (Bobroff et al. Phys. Rev. Lett. 79, 2117 (1997)) have shown that Ni impurities provide an important probe for the momentum dependence of the static spin susceptibility $\\chi'(q)$. Combining the measurements of the $^{17}$O line width $\\Delta \\nu$ with those of the Gaussian relaxation time $T_{2G}$, we find that the magnetic correlation length $\\xi$ must have a substantial temperature dependence. Using numerical simulations we present a detailed analysis of $\\Delta \\nu$ as a function of temperature and impurity concentration. For a "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/9801317","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"}