A conducting 2D crystal sandwiched between two insulating ferromagnets forms a so-called van der Waals spin valve. Magnetization of the top ferromagnetic layer can point in either direction while the bottom one is pinned, resulting in two different in-plane conductances. Selected for an Editors’ Suggestion.
From the article:
Van der Waals Spin ValvesC. Cardoso, D. Soriano, N. A. García-Martínez, and J. Fernández-Rossier
Phys. Rev. Lett. 121, 067701 (2018)
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