{ "id": "cond-mat/0105285", "version": "v1", "published": "2001-05-15T04:27:04.000Z", "updated": "2001-05-15T04:27:04.000Z", "title": "Impurity potential fluctuations for selectively doped p-Ge/Ge_{1-x}Si_x heterostructures in the quantum Hall regime", "authors": [ "Yu. G. Arapov", "O. A. Kuznetsov", "V. N. Neverov", "G. I. Harus", "N. G. Shelushinina", "M. V. Yakunin" ], "comment": "to be presented at the 9-th International Symposium \"Nanostructures-2001\", St.Petersburg, Russia, June 2001", "categories": [ "cond-mat.mes-hall" ], "abstract": "Two models for the long-range random impurity potential (the model with randomly distributed charged centers located within a layer and the model of the system with a spacer) are used for evaluation of the impurity potential fluctuation characteristics: the random potential amplitude, nonlinear screening length in vicinity of integer filling factors nu = 1 and nu = 2 and the background density of state (DOS). The described models are suitable for explanation of the unusually high value of DOS at nu = 1 and nu = 2, in contrast to the short-range impurity potential models.", "revisions": [ { "version": "v1", "updated": "2001-05-15T04:27:04.000Z" } ], "analyses": { "keywords": [ "quantum hall regime", "heterostructures", "short-range impurity potential models", "distributed charged centers" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }