Organic–Inorganic Hybrid Interfaces for Spin Injection into Carbon Nanotubes and Graphene

Abstract

Spintronics is a quantum technology which aims at adding the spin quantum degree of freedom to conventional CMOS electronics. Since the discovery of the giant magneto-resistance in 1988, considered as the birth of this field, spintronics continues flooding the market with plethora of devices used in everyday life applications such as hard drive read heads or magnetic random-access memories, and so on. From a fundamental research perspective, the field is still blooming bringing post-CMOS perspectives technologically closer to the reality with, for instance, prototypes of all-spin-logic circuits and neuromorphic chips. To sustain this intense research activity, a quest for new platform materials is also taking place not only to enhance existing performances but also to generate novel functionalities. In this vein, carbon nanostructures such as molecules, graphene, and carbon nanotubes are among the most sought-after materials. In this review, spin transport experiments in carbon nanotubes and graphene are first detailed and then, the necessity to consider new hybrid interfaces are highlighted for a better control of the spin injection at the quantum device level.

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“…[ 19 ] Spintronics or spin electronics is a quantum technology that aims to add the spin quantum degree of freedom to conventional electronic devices. [ 20 ] At the beginning, spintronic was relying only on metals and inorganic materials. [ 21 ] The first use of a π‐conjugated molecule in spintronics dates back to 2004 with the generation of a hybrid organic/inorganic spin valve in which the current fluctuates when switching the magnetization of the two contacts from parallel to opposite.…”