{"paper":{"title":"Magnetic tricritical point and nematicity in FeSe under pressure","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.supr-con","authors_text":"Alex Amato, Elvezio Morenzoni, Fang Zhou, Gediminas Simutis, Hubertus Luetkens, Rafael M. Fernandes, Rustem Khasanov, Xiaoli Dong, Zhongxian Zhao, Zurab Guguchia","submitted_at":"2018-04-11T19:02:30Z","abstract_excerpt":"Magnetism induced by external pressure ($p$) was studied in a FeSe crystal sample by means of muon-spin rotation. The magnetic transition changes from second-order to first-order for pressures exceeding the critical value $p_{{\\rm c}}\\simeq2.4-2.5$ GPa. The magnetic ordering temperature ($T_{{\\rm N}}$) and the value of the magnetic moment per Fe site ($m_{{\\rm Fe}}$) increase continuously with increasing pressure, reaching $T_{{\\rm N}}\\simeq50$~K and $m_{{\\rm Fe}}\\simeq0.25$ $\\mu_{{\\rm B}}$ at $p\\simeq2.6$ GPa, respectively. No pronounced features at both $T_{{\\rm N}}(p)$ and $m_{{\\rm Fe}}(p)$"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.04169","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"}