{"paper":{"title":"The Local Structure of La1.65Eu0.2Sr 0.15CuO4 determined by 63Cu NMR Spectroscopy and Van Vleck Paramagnetism of Eu3+ Ions","license":"","headline":"","cross_cats":["cond-mat.supr-con"],"primary_cat":"cond-mat.str-el","authors_text":"Alexandre Revcolevschi, Barbara Simovic, Bernd Buechner, Markus Huecker, P. Chris Hammel, Udo Ammerahl","submitted_at":"2002-11-22T22:02:45Z","abstract_excerpt":"We investigate the local symmetry of the tilting of the CuO$_6$ octahedra in La$_{\\rm 1.65}$Eu$_{\\rm 0.2}$Sr$_{\\rm 0.15}$CuO$_{4}$ by means of $^{63}$Cu NMR spectroscopy and the Van Vleck susceptibility of the $\\rm Eu^{3+}$ ions. The Cu NMR central line lineshape is sensitive to local structure through the coupling of the $^{63}\\rm Cu$ nuclear quadrupole moment to the local electric field gradient.The $\\rm Eu^{3+}$ Van Vleck susceptibility, as a single ion effect, locally probes the symmetry of the crystal field at the Eu site. Both techniques independently provide clear evidence for a change "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0211516","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/cond-mat/0211516/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}