{ "id": "cond-mat/9907216", "version": "v1", "published": "1999-07-15T08:58:05.000Z", "updated": "1999-07-15T08:58:05.000Z", "title": "Influence of shape of quantum dots on their far-infrared absorption", "authors": [ "Ingibjorg Magnusdottir", "Vidar Gudmundsson" ], "comment": "RevTeX, 16 pages with 10 postscript figures included. Submitted to Phys. Rev. B", "journal": "Phys. Rev. B 60, 16591 (1999)", "doi": "10.1103/PhysRevB.60.16591", "categories": [ "cond-mat.mes-hall" ], "abstract": "We investigate the effects of the shape of quantum dots on their far-infrared absorption in an external magnetic field by a model calculation. We focus our attention on dots with a parabolic confinement potential deviating from the common circular symmetry, and dots having circular doughnut shape. For a confinement where the generalized Kohn theorem does not hold we are able to interprete the results in terms of a mixture of a center-of-mass mode and collective modes reflecting an excitation of relative motion of the electrons. The calculations are performed within the time-dependent Hartree approximation and the results are compared to available experimental results.", "revisions": [ { "version": "v1", "updated": "1999-07-15T08:58:05.000Z" } ], "analyses": { "keywords": [ "quantum dots", "far-infrared absorption", "external magnetic field", "circular doughnut shape", "common circular symmetry" ], "tags": [ "journal article" ], "publication": { "publisher": "APS", "journal": "Phys. Rev. B" }, "note": { "typesetting": "RevTeX", "pages": 16, "language": "en", "license": "arXiv", "status": "editable" } } }