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

Abstract:
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.

The Quantum-Point-Contact Spin Filter

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