文献详情
A family of high-temperature ferromagnetic monolayers with locked spin-dichroism-mobility anisotropy: MnNX and CrCX (X = Cl, Br, I; C = S, Se, Te)
文献类型：期刊
通讯作者：Ji, W (reprint author), Renmin Univ China, Beijing Key Lab Optoelect Funct Mat & Micronano D, Dept Phys, Beijing 100872, Peoples R China.
期刊名称：SCIENCE BULLETIN影响因子和分区
年：2019
卷：64
期：5
页码：293-300
ISSN：2095-9273
关键词：Two-dimentional materials; First-principles calculation; Strong mobility anisotropy; Spin-locked linear dichroism; High-temperature ferromagnets; Direct bandgap semiconductor
所属部门：物理学系
摘要：Two-dimensional magnets have received increasing attention since Cr2Ge2Te6 and CrI3 were experimentally exfoliated and measured in 2017. Although layered ferromagnetic metals were demonstrated at room temperature, a layered ferromagnetic semiconductor with high Curie temperature (T-c) is yet to be unveiled. Here, we theoretically predicted a family of high T-c ferromagnetic monolayers, namely MnNX and CrCX (X = Cl, Br and I; C = S, Se and Te). Their T-c values were predicted from over 100 K to n ...More
Two-dimensional magnets have received increasing attention since Cr2Ge2Te6 and CrI3 were experimentally exfoliated and measured in 2017. Although layered ferromagnetic metals were demonstrated at room temperature, a layered ferromagnetic semiconductor with high Curie temperature (T-c) is yet to be unveiled. Here, we theoretically predicted a family of high T-c ferromagnetic monolayers, namely MnNX and CrCX (X = Cl, Br and I; C = S, Se and Te). Their T-c values were predicted from over 100 K to near 500 K with Monte Carlo simulations using an anisotropic Heisenberg model. Eight members among them show semiconducting bandgaps varying from roughly 0.23 to 1.85 eV. These semiconducting monolayers also show extremely large anisotropy, i.e. similar to 10(1) for effective masses and similar to 10(2) for carrier mobilities, along the two in-plane lattice directions of these layers. Additional orbital anisotropy leads to a spin-locked linear dichroism, in different from previously known circular and linear dichroisms in layered materials. Together with the mobility anisotropy, it offers a spin-, dichroism-and mobility-anisotropy locking. These results manifest the potential of this 2D family for both fundamental research and high performance spin-dependent electronic and optoelectronic devices. (C) 2019 Science China Press. Published by Elsevier B.V. and Science China Press. All rights reserved. ...Hide

DOI：10.1016/j.scib.2019.02.011
百度学术：A family of high-temperature ferromagnetic monolayers with locked spin-dichroism-mobility anisotropy: MnNX and CrCX (X = Cl, Br, I; C = S, Se, Te)
语言：外文
被引频次：4
人气指数：2
浏览次数：2
基金：National Natural Science Foundation of ChinaNational Natural Science Foundation of China [11274380, 91433103, 11622437, 61674171]; Fundamental Research Funds for the Central Universities of ChinaFundamental Research Funds for the Central Universities [16XNLQ01]; Research Funds of Renmin University of China [16XNLQ01]; Strategic Priority Research Program of Chinese Academy of Sciences [XDB30000000]; Outstanding Innovative Talents Cultivation Funded Programs 2017 of Renmin University of China
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