5 years ago

Prospects of spintronics based on 2D materials

Prospects of spintronics based on 2D materials
Aizhu Wang, Sandhya Chintalapati, Qingyun Wu, Yuan Ping Feng, Lei Shen, Ching-Ray Chang, Ming Yang, Minggang Zeng
Spintronics holds the promise for future information technologies. Devices based on manipulation of spin are most likely to replace the current silicon complementary metal-oxide semiconductor devices that are based on manipulation of charge. The challenge is to identify or design materials that can be used to generate, detect, and manipulate spin. Since the successful isolation of graphene and other two-dimensional (2D) materials, there has been a strong focus on spintronics based on 2D materials due to their attractive properties, and much progress has been made, both theoretically and experimentally. Here, we summarize recent developments in spintronics based on 2D materials. We focus mainly on materials of truly 2D nature, that is, atomic crystal layers such as graphene, phosphorene, monolayer transition metal dichalcogenides, and others, but also highlight current research foci in heterostructures or interfaces. In particular, we emphasize roles played by computation based on first-principles methods which has contributed significantly in the designs of spintronic materials and devices. We also highlight challenges and suggest possible directions for further studies. For further resources related to this article, please visit the WIREs website. Spin-dependent transport property of zigzag graphene nanoribbon and schematics of theoretical design of spintronic device element (insets). The spin-polarization and flow direction of electric current in the graphene nanoribbon can be controlled by magnetization of the electrodes and the bias voltage, allowing implementation of spin logic gates. , spin up, antiparallel magnetization; , spin down, antiparallel magnetization; , spin up, parallel magnetization; , spin down, parallel magnetization.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/wcms.1313

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