{ "id": "1612.03944", "version": "v1", "published": "2016-12-12T21:51:27.000Z", "updated": "2016-12-12T21:51:27.000Z", "title": "Green's functions of electrons in group-VI dichalcogenides in a magnetic field", "authors": [ "Tomasz M Rusin", "Wlodek Zawadzki" ], "comment": "11 pages and 3 figures", "categories": [ "cond-mat.mes-hall", "cond-mat.other", "math-ph", "math.MP" ], "abstract": "Closed expression for the Green's function of the stationary two-dimensional Schrodinger equation for an electron in group-VI dichalcogenides in the presence of a magnetic field is obtained in terms of the Whittaker functions. The resulting Green's function operator is a~$8 \\times 8$ matrix consisting of four block-diagonal~$2\\times 2$ matrices, each of them characterized by different values of valley index and electron spin. The obtained results are used to calculate local density of states induced by a neutral delta-like impurity in the presence of a magnetic field within the lowest Born approximation. The spatial electron density experiences either the Friedel-like oscillations or an exponential decay as a function of the distance from the impurity.", "revisions": [ { "version": "v1", "updated": "2016-12-12T21:51:27.000Z" } ], "analyses": { "keywords": [ "magnetic field", "group-vi dichalcogenides", "stationary two-dimensional schrodinger equation", "spatial electron density experiences", "lowest born approximation" ], "note": { "typesetting": "TeX", "pages": 11, "language": "en", "license": "arXiv", "status": "editable" } } }