Effect of Disorder on the Conductance of Spin Field Effect Transistors (SPINFET)

Details Effect of Disorder on the Conductance of Spin Field Effect Transistors (SPINFET) Effect of Disorder on the Conductance of Spin Field Effect Transistors (SPINFET)

2003-06-11

arxiv.org/abs/cond-mat/0306283v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

We show that the conductance of Spin Field Effect Transistors (SPINFET) [Datta and Das, Appl. Phys. Lett., Vol. 56, 665 (1990)] is affected by a single (non-magnetic) impurity in the transistor's channel. The extreme sensitivity of the amplitude and phase of the transistor's conductance oscillations to the location of a single impurity in the channel is reminiscent of the phenomenon of universal conductance fluctuations in mesoscopic samples and is extremely problematic as far as device implementation is concerned.

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