Quantum spin field effect transistor

Details Quantum spin field effect transistor Quantum spin field effect transistor

2002-08-26

arxiv.org/abs/cond-mat/0208475v1

Phys. Rev. B Vol.67, 092408 (2003).

Physics

Condensed Matter

Scientific paper

10.1103/PhysRevB.67.092408

We propose, theoretically, a new type of quantum field effect transistor that operates purely on the flow of spin current in the absence of charge current. This spin field effect transistor (SFET) is constructed without any magnetic material, but with the help of spin flip mechanism provided by a rotating external magnetic field of uniform strength. The SFET generates a constant instantaneous spin current that is sensitively controllable by a gate voltage as well as by the frequency and strength of the rotating field. The characteristics of a Carbon nanotube based SFET is provided as an example.

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