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JST Press Release

October 11, 2016
Japan Science and Technology Agency (JST)
5-3, Yonbancho, Chiyoda-ku, Tokyo 102-8666

Cu becomes an essential material for spintronics through oxidation

Spintronics is the essential technology for ultra-low power consumption, high speed, nonvolatile magnetic memory and logic devices. However, it has been believed that heavy metals with strong spin-orbit interaction, such as platinum, palladium, etc, are indispensable for achieving high spin-torque generation efficiency for the practical applications. For the first time, Ando group in Keio university has discovered that naturally oxidized copper can achieve a spin-torque generation efficiency as high as platinum. This finding opens a novel route for fabricating spintronic devices without using costly heavy metals and prompt the practical applications of spintronics technology.

Program Information

Research Area “Innovative Nano-electronics through Interdisciplinary Collaboration among Material, Device and System Layers”
Research Theme “Creation of energy-saving nano electronic device based on spin Hall engineering”

Journal Information

Hongyu An, Yuito Kageyama, Yusuke Kanno, Nagisa Enishi and Kazuya Ando. “Spin-torque generator engineered by natural oxidation of Cu”. Nature Communications, Published online 11 October 2016, doi: 10.1038/ncomms13069.


[About Research]
Kazuya Ando, Ph.D.
Associate Professor, Department of Applied Physics and Physico-Informatics, Keio University
URL: http://www.ando.appi.keio.ac.jp/

[About Program]
Sofia Saori Suzuki
Green Innovation Group, Department of Innovation Research, JST


JST, an integrated organization of science and technology in Japan, establishes an infrastructure for the entire process from the creation of knowledge to the return to the society. For more information, visit http://www.jst.go.jp/EN/