Nanotech 2001 Vol. 1
Nanotech 2001 Vol. 1
Technical Proceedings of the 2001 International Conference on Modeling and Simulation of Microsystems

Quantum Effects, Quantum Devices and Spintronics Chapter 11

The Quantum-Point-Contact Spin Filter

Authors: M.J. Gilbert and J.P. Bird

Affilation: Arizona State University, United States

Pages: 570 - 573

Keywords: spin filter, spin devices, split-gate technique, quantum point contact

We describe an electron filter that exploits the known transmission properties of quantum point contacts to allow local and tunable control of the spin polarization in a semiconductor. When properly configured, the conductance of this device gives a direct measure of the spin polarization of the carriers transmitted through it. These predictions are confirmed by numerical simulations, performed for a spin filter with realistic device parameters.

ISBN: 0-9708275-0-4
Pages: 638