Spintronics, 2D Materials, and the Future of Quantum

By Cvetelin Vasilev, Ph.D.Aug 8 2022 Spintronics is an emerging technology that exploits the intrinsic quantum properties of particles like the electron, and the associated particle angular moment, called spin, in addition to the particle's electric charge. The dynamic control of the electron spin offers possibilities for creating novel quantum-mechanical devices, such as spin transistors, spin valves, and high-density memory.

The spin state in these randomly scattered domains can be easily manipulated by the application of external magnetic fields. In addition, the transfer of electron spin-states between different materials and their reliable detection is also of great importance for spintronics. By actively manipulating the spin of the charge carrier particles with spin-dependent properties, researchers envisage that they can create spin transistors, spin filters, and new memory devices suitable for quantum information processing and computation.

Graphene, with its high charge carrier mobility, extended spin lifetime, and long diffusion length, emerged as an excellent platform for fundamental spintronic research and eventual spintronics devices. There are several outstanding challenges related to the stability of the 2D materials and their manufacturing. Due to their atomic thickness, 2D spintronic devices are highly susceptible to moisture, oxidation, and thermal damage, thus requiring operation in a protected environment. Besides, the Curie temperature of most of the 2D magnetic materials is far below room temperature.

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