Transient magnetization in copper layer (red) and copper-cobalt interface (purple) caused by spin injection from an adjacent ferromagnetic polarizer layer of cobalt (blue). Selected for an Editor’s Suggestion and a Viewpoint in Physics.

From the article:

X-ray Detection of Transient Magnetic Moments Induced by a Spin Current in Cu
R. Kukreja, S. Bonetti, Z. Chen, D. Backes, Y. Acremann, J. A. Katine, A. D. Kent, H. A. Dürr, H. Ohldag, and J. Stöhr
Phys. Rev. Lett. 115, 096601 (2015)

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