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Discovery of Intrinsic Ferromagnetism in Two-Dimensional van der Waals Crystals

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Abstract

We report the experimental discovery of intrinsic ferromagnetism in Cr2Ge2Te6 atomic layers by scanning magneto-optic Kerr microscopy. In this 2D van der Waals ferromagnet, unprecedented control of transition temperature is realized via small magnetic fields.

© 2017 Optical Society of America

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