{ "id": "1209.6234", "version": "v1", "published": "2012-09-27T14:07:24.000Z", "updated": "2012-09-27T14:07:24.000Z", "title": "Electronic structure of InAs quantum dots with GaAsSb strain reducing layer: Localization of holes and its effect on the optical properties", "authors": [ "P. Klenovský", "V. Křápek", "D. Munzar", "J. Humlíček" ], "journal": "APPLIED PHYSICS LETTERS 97, 203107 (2010)", "doi": "10.1063/1.3517446", "categories": [ "cond-mat.mes-hall" ], "abstract": "The electronic structure of InAs quantum dots covered with the GaAs(1-y)Sb(y) strain reducing layer has been studied using the k.p theory. We explain previous experimental observations of the red shift of the photoluminescence emission with increasing y and its blue shift with increasing excitation power. For y>0.19 type-II dots are formed with holes localized in the GaAsSb close to the dot base; two segments at opposite sides of the dot, forming molecular-like states, result from the piezoelectric field. We also propose an experiment that could be used to identify the hole localization using a vertical electric field.", "revisions": [ { "version": "v1", "updated": "2012-09-27T14:07:24.000Z" } ], "analyses": { "subjects": [ "71.20.Nr", "78.55.Cr", "71.15.-m" ], "keywords": [ "inas quantum dots", "gaassb strain reducing layer", "electronic structure", "optical properties", "localization" ], "tags": [ "journal article" ], "publication": { "publisher": "AIP", "journal": "Applied Physics Letters", "year": 2010, "month": "Nov", "volume": 97, "number": 20, "pages": 203107 }, "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable", "adsabs": "2010ApPhL..97t3107K" } } }