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Magnetic Phase Transition in strained two-dimensional semiconductor MoTeI Monolayer

机译：应变二维半导体Motei Monolayer中的磁相转变

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摘要

We find through density functional theory that the two-dimensional MoTeI monolayer is intrinsically a ferro-magnetic semiconductor. The magnetic states of MoTeI monolayer are sensitive and can be significantly changed by biaxial strain. It is fully spin polarized and half-metallic intrinsically or with tensile strain, while becomes antiferromagnetic when over 0.4% compressive strain is applied. After the magnetic phase transition, the semiconducting characteristics are always maintained and little charge transfer is observed. We believe that the magnetic phase transition is attributed to the competition of the direct interaction and indirect superexchange interaction between magnetic centers of Mo atoms. These findings suggest that the MoTeI monolayer can be a potential candidate for spintronics applications.
机译：我们通过密度泛函理论发现二维Motei单层是本质上的铁磁半导体。 Motei Monolayer的磁性状态是敏感的，并且可以通过双轴菌株显着改变。它是完全自旋偏振的和半金属的本质上或抗拉菌株，而当施加超过0.4％的压缩菌株时，成为反铁磁性。在磁相转变之后，始终保持半导体特性，并且观察到少量电荷转移。我们认为磁相转变归因于莫原子磁中心之间的直接相互作用和间接超速相互作用的竞争。这些发现表明，Motei Monolayer可以是闪光灯应用的潜在候选者。

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  • 来源
    《Applied Surface Science》 |2021年第15期|147842.1-147842.5|共5页
  • 作者

    Li Wanxue; Guo Chunsheng; Zang Qing; Ding Rui; Zhao Yong;

  • 作者单位

    Southwest Jiaotong Univ Minist Educ Key Lab Magnet Levitat Technol & Maglev Trains Superconduct & New Energy R&D Ctr Mail Stop 165 Chengdu 610031 Sichuan Peoples R China|Southwest Jiaotong Univ Superconduct & New Energy R&D Ctr Sch Phys Sci & Technol Chengdu 610031 Sichuan Peoples R China;

    Southwest Jiaotong Univ Superconduct & New Energy R&D Ctr Sch Phys Sci & Technol Chengdu 610031 Sichuan Peoples R China;

    Chinese Acad Sci Inst Plasma Phys Hefei 230031 Peoples R China;

    Chinese Acad Sci Inst Plasma Phys Hefei 230031 Peoples R China;

    Southwest Jiaotong Univ Minist Educ Key Lab Magnet Levitat Technol & Maglev Trains Superconduct & New Energy R&D Ctr Mail Stop 165 Chengdu 610031 Sichuan Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    MoTeI monolayer; Ferrimagnetic semiconductor; Tunable magnetic phase;

    机译：Motei Monolayer;Ferrimagnetic Semiconductor;可调磁相;

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