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Promising 2D material opens path for next-gen spintronics

Posted: 03 Feb 2016 ?? ?Print Version ?Bookmark and Share

Keywords:National University of Singapore? spintronics? 2D material? MoS2? transistor?

By comparing the theoretical and experimental results, the two research groups were able to extract spin lifetimes and also determine that the relaxation was driven by the Dyakonov-Perel type where electron spins live longer in dirtier samples.

"Aside from investigating the fundamental properties of low field magnetotransport in molybdenum disulfide, our team was able to establish the mechanism for spin scattering to reveal the properties of the electron spin," said Hennrik Schmidt, who was a research fellow working under the supervision of Eda when the study was conducted.

Commenting on the significance of the discovery, Adam noted that spin-based devices would generally lead to lower energy consumption as compared to conventional electronics. He explained, "The combination of MoS2 being a semiconductor and the long spin lifetimes open up opportunities in spintronics, where the electron spin and not the electron charge is used to transport information. Such unconventional devices could allow for next generation low-power devices."

Professor Yoshihiro Iwasa, director of the Centre for Quantum-Phase Electronics at the University of Tokyo, and a world expert on quantum devices who first reported superconductivity in this class of materials remarked, "2D materials have been anticipated as a promising platform for spintronics. I feel that this very comprehensive study of the analysis of the electron spin life time will provide crucial information for further pushing the research toward the realisation of a new generation of spintronic devices."

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