A scheme for spin transistor with extremely large on/off current ratio

Details A scheme for spin transistor with extremely large on/off current ratio A scheme for spin transistor with extremely large on/off current ratio

2008-10-19

arxiv.org/abs/0810.3319v2

J. Appl. Phys. 104, 123709 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 6 figures, J. Appl. Phys., in press

Scientific paper

10.1063/1.3050326

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.

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