{"paper":{"title":"Effects of magnetism and doping on the electron-phonon coupling in BaFe$_{2}$As$_{2}$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.supr-con","authors_text":"(2) CNRS, (3) Naval Research Laboratory, France, Francesco Mauri(2) ((1) Max-Planck-Institute for Solid State Physics, Germany, Igor I. Mazin(3), Institut de Mineralogie et de Physique des Milieux Condenses, Lilia Boeri(1), Matteo Calandra(2), Oleg V. Dolgov(1), Paris Cedex, Stuttgart, USA)","submitted_at":"2010-04-12T12:57:02Z","abstract_excerpt":"We calculate the effect of local magnetic moments on the electron-phonon coupling in BaFe$_{2}$As$_{2}+\\delta$ using the density functional perturbation theory. We show that the magnetism enhances the total electron-phonon coupling by $\\sim 50%$, up to $\\lambda \\lesssim 0.35$, still not enough to explain the high critical temperature, but strong enough to have a non-negligible effect on superconductivity, for instance, by frustrating the coupling with spin fluctuations and inducing order parameter nodes. The enhancement comes mostly from a renormalization of the electron-phonon matrix elements"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1004.1943","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"}