A scheme for spin transistor with extremely large on/off current ratio
arXiv:0810.3319 · doi:10.1063/1.3050326
Abstract
Quantum wires with periodic local Rashba spin-orbit couplings are proposed for a higher performance of spin field-effect transistor. Fano-Rashba quantum interference due to the spin-dependent modulated structure gives rise to a broad energy range of vanishingly small transmission. Tuning Rashba spin-orbit couplings can provide the on- or off-currents with extremely large on/off current ratios even in the presence of a strong disorder.
4 pages, 6 figures, J. Appl. Phys., in press