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Hybrid heterostructures for spintronics

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Spintronics is a quantum technology that aims to add the quantum spin degree of freedom to conventional CMOS electronics. Since the discovery of giant magnetoresistance in 1988 by Albert Fert and Peter Grünberg, considered the birth of this field, spintronics has continued to flood the market with a plethora of devices used in everyday applications such as the reading heads of hard drives, magnetic sensors in cars or magnetic random-access memories (MRAM), etc.

From a fundamental research perspective, the field is still booming, technologically bringing post-CMOS perspectives closer to reality with, for example, prototype logic circuits and neuromorphic systems. To support this intense research activity, the search for new "platform" materials is also underway, not only to improve existing performance, but also to generate new functionalities. In this vein, carbon nanostructures such as molecules, graphene and carbon nanotubes are some of the most sought-after materials.

In this review published in Advanced Quantum Technologies, spin transport experiments in carbon nanotubes and graphene are first detailed, then the need to consider new hybrid organic/inorganic interfaces is highlighted for better control of spin injection at the quantum device.

Graphene chemical functionalization via radical, carbene, nitrene, or aryne cycloaddition.

Clément Barraud (

Organic–Inorganic Hybrid Interfaces for Spin Injection into Carbon Nanotubes and Graphene, Pascal Martin, Bruno Dlubak, Pierre Seneor, Richard Mattana, Marie-Blandine Martin, Philippe Lafarge, François Mallet, Maria Luisa Della Rocca, Simon M.-M. Dubois, Jean-Christophe Charlier, Clément Barraud, Advanced Quantum Technologies, 2100166 (2022)