Intensity- and sign-tunable spin-charge conversion

A joint INAC-CNRS-Thales research team achieved record intensity- and sign-tunable spin-charge conversion in the two-dimensional electron gas at the interface between a layer of strontium titanate and another layer of lanthanum aluminate. The conversion rate was five to ten times higher than with the materials currently used.

The researchers worked at 7 K, injecting a spin current through a material’s magnetic tunnel contact to obtain a powerful transverse current, which can then be tuned by adjusting grid voltage.

The research shows that 2D electronic systems could be just as useful to spintronics as topological insulators. The research was published in Nature Materials.

Contact: jean-philippe.attane@cea.fr

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