自旋电子学
单层
铁磁性
磁性
材料科学
磁性半导体
半导体
凝聚态物理
纳米技术
光电子学
物理
作者
Zhicui Wang,Michang Zhang,Wenhui Wan,Yanfeng Ge,Yong Liu
标识
DOI:10.1016/j.physe.2023.115666
摘要
Two-dimensional anti-ferromagnetic materials with room-temperature magnetism are highly desirable for the applications of anti-ferromagnetic spintronic devices. Here, a monolayer anti-ferromagnetic chromium dichloride (CrCl2) with a 1T′ structure is reported based on first-principle calculations. The structural dynamic stability can be ensured by the lattice distortion of dimerization and the 1T′ CrCl2 is an anti-ferromagnetic semiconductor with a bandgap of 2.03 eV. Importantly, The dimerization also leads to that the nearest Cr atoms exhibit high anti-ferromagnetic coupling. 1T' CrCl2 has a Néel temperature of 386 K according to estimations from a Monte-Carlo simulation using the Heisenberg model. This work provides a two-dimensional material with intrinsic anti-ferromagnetism above room temperature, which is one of the promising candidates for the future nanoscale spintronics.
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