Double filtering based spin element, method thereof, and spintronics device including the same

A spintronics device comprising:

• a first stage;
• a second stage;
• and
• a conductive channel connected to the first stage and the second stage,
• wherein the first stage includes:
• a first magnetic layer including a first portion and a second portion,
• a second magnetic layer including a third portion and a fourth portion,
• a first spin-to-charge conversion layer formed between the first portion and the third portion and generating a first electric field by performing spin-orbit coupling on first passing electrons and first reflected electrons,
• a first spin injection layer formed between the first portion and the first spin-to-charge conversion layer and injecting the first passing electrons that have passed through the first magnetic layer into the first spin-to-charge conversion layer, and
• a second spin injection layer formed between the first spin-to-charge conversion layer and the third portion and injecting the first reflected electrons reflected from the second magnetic layer among second passing electrons that have passed through the first spin-to-charge conversion layer into the first spin-to-charge conversion layer.

A method for operating a double-filtering-based spin element, comprising:

• supplying electrons filtered by a first ferromagnet having a first magnetization direction to a spin-to-charge conversion layer;
• generating a first electric field as spin-orbit coupling is performed on the filtered electrons in the spin-to-charge conversion layer;
• supplying reflected electrons reflected by a second ferromagnet having a second magnetization direction among electrons that have passed through the spin-to-charge conversion layer to the spin-to-charge conversion layer;
• and
• generating a second electric field by additionally performing spin-orbit coupling on the reflected electrons in the spin-to-charge conversion layer.