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. 2018 Apr 26;9:1672. doi: 10.1038/s41467-018-04012-2

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© The Author(s) 2018

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Fig. 1 — Schematics of the experiment. a MBE synthesis of MSi₂ silicene materials by directing metal atoms (Gd or Eu) at the Si(111) substrate leading to formation of b a bulk (multilayer) material or c a monolayer. The AFM state of the bulk d transforms into 2D ferromagnetism with its characteristic dependence of the transition temperature on magnetic fields e