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Low-dimensional intrinsically ferromagnetic semiconductors are rare and crucial to develop the next-generation spintronics devices. CrI${}_{3}$ is a promising candidate since its ferromagnetism can be maintained upon exfoliating of bulk crystals… Click to show full abstract
Low-dimensional intrinsically ferromagnetic semiconductors are rare and crucial to develop the next-generation spintronics devices. CrI${}_{3}$ is a promising candidate since its ferromagnetism can be maintained upon exfoliating of bulk crystals down to single layer. However, the nature of magnetism in bulk CrI${}_{3}$ is still unclear. Here, the authors experimentally study the critical properties of bulk CrI${}_{3}$ around the paramagnetic to ferromagnetic phase transition, and idenify clearly three-dimensional long-range magnetic coupling with the exchange distance decaying as $J(r)$ \ensuremath{\approx} ${r}^{\ensuremath{-}4.69}$ in bulk CrI${}_{3}$.
Journal Title: Physical Review B
Year Published: 2018
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