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arXiv · 1709.05472

Tunable spin states in two-dimensional magnet CrI3

Fawei Zheng·Jize Zhao·Zheng Liu·Menglei Li·Mei Zhou·Shengbai Zhang·Ping Zhang
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Abstract

The recent discovery of ferromagnetic single-layer CrI3 creates ample opportunities for studying fundamental properties of atomically-thin magnets. By using first-principles calculations and model analysis, we show that a lateral strain and/or charge doping can have unexpected effects on the magnetic properties of CrI3. In particular, strain tunes the magnetic order and anisotropy: (1) a compressive strain leads to a phase transition from a ferromagnetic insulator to an antiferromagnetic insulator, while (2) a tensile strain can flip the magnetic orientation from off-plane to in-plane. Interestingly, we find that the phase boundary for the first transition is insensitive to charge doping, whereas that of the second one can be significantly modulated by electron doping.

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Fawei Zheng, Jize Zhao, Zheng Liu, Menglei Li, Mei Zhou, Shengbai Zhang, Ping Zhang. 2017-09-16. Tunable spin states in two-dimensional magnet CrI3. https://arxiv.org/abs/1709.05472

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