M. Ramezani Masir, A. Matulis, F. M. Peeters
Published 2009-07-21Version 1
The properties of a two-dimensional electron are investigated in the presence of a circular step magnetic field profile. Both electrons with parabolic dispersion as well as Dirac electrons with linear dispersion are studied. We found that in such a magnetic quantum dot no electrons can be confined. Nevertheless close to the Landau levels quasi-bound states can exist with a rather long life time.
Comments: 9 pages, 10 figures
Journal: Phys. Rev. B 79, 155451 (2009)
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