Abstract
The electron transport properties are studied in a two-dimensional-electron gas in InSb heterostructure with a transverse parabolic potential well, and under the influence of a uniform external magnetic (B) field. The Schrödinger equation is solved and the resulting Landau-like eigenstates are described by Hermitian functions. The resulting transmission and spin polarization of the device is strongly dependent on the potential well width, the Landau level index, and the strength of applied magnetic field. It is found that the device is capable of achieving almost perfect spin polarization of 100% due to the distinct spin-split in the transmission threshold. For large B fields, the transmission and spin polarization profiles show distinct resonantlike behavior.
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