arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2201.11350cond-mat.mtrl-sci
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声子不可约表示计算器

A phonon irreducible representations calculator

Zeying Zhang, Zhi-Ming Yu, Gui-Bin Liu, Yugui Yao

摘要:

能带结构的不可约表示对于物理性质是重要的。基于Phonopy和最近开发的SpaceGroupIrep软件包,我们开发了一个PhononIrep软件包,它可以在第一性原理水平上得到任意$\boldsymbol{k}$点的带不可约表示.作为应用,我们首次预言了常规晶体声子系统X $_3$ Y(X=Ti,Nb,Ta,Y=Au,Sb)中存在立方交叉狄拉克点。我们希望这个软件包将促进声子的研究在未来。

英文摘要:

The irreducible representation of band structure is important for physical properties. Based on phonopy and recently developed SpaceGroupIrep package, we developed a package PhononIrep, which can get the band irreducible representation for arbitrary $\boldsymbol{k}$ point at first-principles level. As an application, we for the first time predict the cubic crossing Dirac point can exist in conventional crystal phonon systems X$_3$Y (X=Ti, Nb, Ta, Y=Au, Sb). We hope this package will facilitate phonon research in the future.

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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