Oscillatory Spin-Filtering due to Gate Control of Spin-Dependent Interface Conductance

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.


Published in:
Physical Review Letters, 86, 6, 1058-1061
Year:
2001
ISSN:
1079-7114
Laboratories:




 Record created 2015-07-08, last modified 2018-09-13


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