Multiferroic oxides-based flash-memory and spin-field-effect transistor

Details Multiferroic oxides-based flash-memory and spin-field-effect transistor Multiferroic oxides-based flash-memory and spin-field-effect transistor

2009-06-23

arxiv.org/abs/0906.4210v1

Appl. Phys. Lett. 95, 012105 (2009)

Physics

Condensed Matter

Materials Science

Accepted for publication in Appl. Phys. Lett

Scientific paper

We propose a modified spin-field-effect transistor fabricated in a two dimensional electron gas (2DEG) formed at the surface of multiferroic oxides with a transverse helical magnetic order. The topology of the oxide local magnetic moments induces a resonant momentum-dependent effective spin-orbit interaction acting on 2DEG. We show that spin polarization dephasing is strongly suppressed which is crucial for functionality. The carrier spin precession phase depend linearly on the magnetic spiral helicity. The latter is electrically controllable by virtue of the magento-electric effect. We also suggest a flash-memory device based on this structure.

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