The Evolution of Band Topology in Two-Dimensional Weyl Half-Metals
Two-dimensional ferromagnetic Weyl half-metals that are robust against spin–orbital coupling were theoretically proposed recently, in which the nodal points and the nodal loops are protected by specific symmetries. As the symmetry of a ferromagnetic material is highly dependent on the magnetization...
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| Veröffentlicht in: | The journal of physical chemistry letters 2023-01, Vol.14 (3), p.825-831 |
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| container_title | The journal of physical chemistry letters |
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| creator | Ma, Cheng Chen, Xuejiao Jin, Kuijuan Ren, Wenning Zhong, Zhicheng Ge, Chen Guo, Erjia Xu, Xiulai Zhang, Qiulin Wang, Can |
| description | Two-dimensional ferromagnetic Weyl half-metals that are robust against spin–orbital coupling were theoretically proposed recently, in which the nodal points and the nodal loops are protected by specific symmetries. As the symmetry of a ferromagnetic material is highly dependent on the magnetization orientation, here we predict a family of two-dimensional ferromagnetic Weyl half-metals, Mn2X3 (X = S, Se, Te) monolayers, to investigate the band topology under different magnetization orientations in the presence of spin–orbital coupling. The Curie temperatures (∼1000 K) were estimated to be much higher than room temperature due to the strong double exchange interaction and the suppression of spin fluctuation for the two-sublayer structure. Taking a Mn2Te3 monolayer as an example, we demonstrated the evolution of the nodal points and the nodal loops in the presence of spin–orbital coupling via manipulating magnetization orientation. Our work provides a family of high temperature two-dimensional ferromagnetic Weyl half-metals for investigating the nontrivial band topology. |
| doi_str_mv | 10.1021/acs.jpclett.2c03548 |
| format | Article |
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As the symmetry of a ferromagnetic material is highly dependent on the magnetization orientation, here we predict a family of two-dimensional ferromagnetic Weyl half-metals, Mn2X3 (X = S, Se, Te) monolayers, to investigate the band topology under different magnetization orientations in the presence of spin–orbital coupling. The Curie temperatures (∼1000 K) were estimated to be much higher than room temperature due to the strong double exchange interaction and the suppression of spin fluctuation for the two-sublayer structure. Taking a Mn2Te3 monolayer as an example, we demonstrated the evolution of the nodal points and the nodal loops in the presence of spin–orbital coupling via manipulating magnetization orientation. 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Phys. Chem. Lett</addtitle><description>Two-dimensional ferromagnetic Weyl half-metals that are robust against spin–orbital coupling were theoretically proposed recently, in which the nodal points and the nodal loops are protected by specific symmetries. As the symmetry of a ferromagnetic material is highly dependent on the magnetization orientation, here we predict a family of two-dimensional ferromagnetic Weyl half-metals, Mn2X3 (X = S, Se, Te) monolayers, to investigate the band topology under different magnetization orientations in the presence of spin–orbital coupling. The Curie temperatures (∼1000 K) were estimated to be much higher than room temperature due to the strong double exchange interaction and the suppression of spin fluctuation for the two-sublayer structure. Taking a Mn2Te3 monolayer as an example, we demonstrated the evolution of the nodal points and the nodal loops in the presence of spin–orbital coupling via manipulating magnetization orientation. 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Phys. Chem. Lett</addtitle><date>2023-01-26</date><risdate>2023</risdate><volume>14</volume><issue>3</issue><spage>825</spage><epage>831</epage><pages>825-831</pages><issn>1948-7185</issn><eissn>1948-7185</eissn><abstract>Two-dimensional ferromagnetic Weyl half-metals that are robust against spin–orbital coupling were theoretically proposed recently, in which the nodal points and the nodal loops are protected by specific symmetries. As the symmetry of a ferromagnetic material is highly dependent on the magnetization orientation, here we predict a family of two-dimensional ferromagnetic Weyl half-metals, Mn2X3 (X = S, Se, Te) monolayers, to investigate the band topology under different magnetization orientations in the presence of spin–orbital coupling. The Curie temperatures (∼1000 K) were estimated to be much higher than room temperature due to the strong double exchange interaction and the suppression of spin fluctuation for the two-sublayer structure. Taking a Mn2Te3 monolayer as an example, we demonstrated the evolution of the nodal points and the nodal loops in the presence of spin–orbital coupling via manipulating magnetization orientation. Our work provides a family of high temperature two-dimensional ferromagnetic Weyl half-metals for investigating the nontrivial band topology.</abstract><cop>United States</cop><pub>American Chemical Society</pub><pmid>36655858</pmid><doi>10.1021/acs.jpclett.2c03548</doi><tpages>7</tpages><orcidid>https://orcid.org/0000-0003-1507-4814</orcidid><orcidid>https://orcid.org/0000-0002-0047-4375</orcidid><orcidid>https://orcid.org/0000-0002-4404-7957</orcidid><orcidid>https://orcid.org/0000-0002-8093-940X</orcidid><orcidid>https://orcid.org/0000-0001-8231-406X</orcidid></addata></record> |
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| title | The Evolution of Band Topology in Two-Dimensional Weyl Half-Metals |
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