{"paper":{"title":"Magnetoelectric flat band induced by a $\\sqrt{3}\\times\\sqrt{3}$ charge density wave in monolayer CrSe$_2$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.str-el","authors_text":"Adolfo O. Fumega, Jan Phillips, Javier Corral Sertal, M. del Carmen Fuente Santiago, Pablo Savino, Santiago Blanco-Canosa, Victor Pardo","submitted_at":"2026-06-23T12:27:03Z","abstract_excerpt":"We investigate the electronic and magnetic properties of the polar $\\sqrt{3}\\times\\sqrt{3}$ charge-density-wave (CDW) phase of CrSe$_2$ using ab initio calculations. The CDW introduces a polar distortion out of the van der Waals plane that couples to the spin-polarized Cr d states resulting in a remarkably flat electronic band exactly at the Fermi level. We provide a microscopic understanding of the origin of the flat band by analyzing in detail the structural reconstruction, the effects of orbital hybridization, crystal-field splittings, spin-orbit coupling and electronic correlations. Our ca"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.24494","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2606.24494/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"}