{"paper":{"title":"Ab initio study of $Z_2$ topological phases in perovskite (111) $(\\text{SrTiO}_3)_7/(\\text{SrIrO}_3)_2$ and $(\\text{KTaO}_3)_7/(\\text{KPtO}_3)_2$ multilayers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.str-el","authors_text":"D. Baldomir, J. L. Lado, V. Pardo","submitted_at":"2013-06-10T16:05:33Z","abstract_excerpt":"Honeycomb structures formed by the growth of perovskite 5d transition metal oxide heteroestructures along the (111) direction in $t_{2g}^5$ configuration can give rise to topological ground states characterized by a topological index $\\nu$=1. Using a combination of a tight binding model and ab initio calculations we study the multilayers $(\\text{SrTiO}_3)_7/(\\text{SrIrO}_3)_2$ and $(\\text{KTaO}_3)_7/(\\text{KPtO}_3)_2$ as a function of parity asymmetry, on-site interaction and uniaxial strain and determine the nature and evolution of the gap. $(\\text{SrTiO}_3)_7/(\\text{SrIrO}_3)_2$ is found to "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1306.2238","kind":"arxiv","version":3},"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"}