Ballistic spin-filter transistor
Abstract
Spin-dependent ballistic transport in a mesoscopic two-dimensional electron system with two metallic ferromagnetic electrodes is studied using the Landauer-Büttiker formalism. Our calculations predict a pronounced spin-valve effect in the ballistic regime for, e.g., Fe on InAs. The origin is spin filtering at the interfaces. In this spintronic device, the magnetoconductance ratio can be controlled via a gate voltage.
- Publication:
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Physical Review B
- Pub Date:
- April 2001
- DOI:
- Bibcode:
- 2001PhRvB..63p1307G
- Keywords:
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- 71.20.-b;
- 71.70.Ej;
- 73.21.-b;
- 73.40.Sx;
- Electron density of states and band structure of crystalline solids;
- Spin-orbit coupling Zeeman and Stark splitting Jahn-Teller effect;
- Electron states and collective excitations in multilayers quantum wells mesoscopic and nanoscale systems;
- Metal-semiconductor-metal structures