{"paper":{"title":"Colossal anisotropy in diluted magnetic topological insulators","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"A. S. N\\'u\\~nez, J. Fern\\'andez-Rossier","submitted_at":"2010-03-30T21:36:05Z","abstract_excerpt":"We consider  dilute magnetic doping in the surface of a  three dimensional topological insulator where a two dimensional Dirac  electron gas resides.  We find that  exchange coupling between  magnetic atoms and the Dirac  electrons has a strong and peculiar effect on both.  First,   the  exchange-induced single ion  magnetic anisotropy is very large and favors off-plane orientation. In the case of ferromagnetically ordered phase    we find a colossal magnetic anisotropy energy, of the order of the critical temperature. Second,    a persistent  electronic current circulates around the magnetic "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1003.5931","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"}