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VOLUME 56 (1992) | ISSUE 1 | PAGE 55
Bound states near a short range impurity in ctossed magnetic and electric fields
The problem of quantum scattering of an electron by a short range impurity in a two-dimensional electron gas in the presence of a perpendicular magnetic and a longitudinal electric field is solved. It is shown that additionally to the bound state which exists also in the case of zero electric field, in the presence of an electric field N novel nondegenerate quasi bound states appear with energies close to the JV-th Landau level, irrespective whether the impurity is attractive or repulsive.