Oscillatory spin-filtering due to gate control of spin-dependent interface conductance.

@article{Grundler2001OscillatorySD,
  title={Oscillatory spin-filtering due to gate control of spin-dependent interface conductance.},
  author={Dirk Grundler},
  journal={Physical review letters},
  year={2001},
  volume={86 6},
  pages={1058-61}
}
Using the Landauer-Büttiker formalism, we study ballistic transport properties of an interface between a ferromagnetic metal and a mesoscopic two-dimensional electron system in a III-V semiconductor. We show that in a Sharvin point contact spin-filtering occurs due to band structure mismatch. Theory predicts a pronounced effect for Fe on InAs which can be controlled via a gate electrode. 

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