Review

Two-dimensional magnetic crystals and emergent heterostructure devices

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Science  15 Feb 2019:
Vol. 363, Issue 6428, eaav4450
DOI: 10.1126/science.aav4450

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The ultimate in thin-film magnetism

The alignment of the magnetic properties of atoms gives rise to a wealth of simple and exotic properties that can be exploited. As the dimension of the material is reduced, such that the atoms are in a single monolayer, it was widely believed that thermal fluctuations overwhelm and prevent magnetic ordering. Gong and Zhang review the developments that have followed the recent discovery of magnetism in two-dimensional materials. Recognizing that magnetic anisotropy can be used to induce stable magnetism in atomic monolayers, they provide an overview of the materials available and the physical understanding of the effects and then discuss how these effects could be exploited for widespread practical applications.

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