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arXiv 2601.02481cond-mat.mtrl-sci
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一种掺杂过渡金属二硫化物中的交替磁性材料库

An altermagnetic materials library in intercalated transition-metal dichalcogenides

Arizona State University(亚利桑那州立大学)

Ezra Day-Roberts, Huan Wu, Onur Erten, A. S Botana

AI总结:

本文通过第一性原理研究了磁性掺杂过渡金属二硫化物中的交替磁性现象,发现几种材料在费米能级处具有显著的自旋分裂。

摘要:

交替磁性材料因其在无净磁化情况下具有独特的自旋分裂能带结构而具有广阔前景。本文通过第一性原理研究了在磁性掺杂的过渡金属二硫化物(TMDs)中交替磁性现象,其通用公式为T_yMX_2(T=3d过渡金属,M=过渡金属,X=硫化物,y=1/3或1/4)。对于具有2H结构的TMD基质,表现出A型反铁磁性的化合物是通过对称性成为g波交替磁体。我们识别出几种掺杂的TMDs满足实现交替磁序的条件。其中几种候选材料在费米能级处显示出高达100 meV的自旋分裂。

英文摘要:

Altermagnets represent a promising class of magnetic materials owing to their distinctive spin-split band structures in the absence of net magnetization. Here, we present a first-principles investigation of altermagnetism in magnetically intercalated transition metal dichalcogenides (TMDs) with the general formula T$_y$MX$_2$ (T= 3$d$-transition metal, M= transition-metal, X=chalcogen, $y$= 1/3 or 1/4). For a TMD host with 2H structure, compounds exhibiting A-type antiferromagnetism are $g$-wave altermagnets by symmetry. We identify several intercalated TMDs fulfilling the conditions for altermagnetic order to be realized. Several of these candidate materials display spin-splittings at the Fermi level as large as 100 meV.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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