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Description:

We present the possibility of x-ray magnetic circular dichroism on RuO2 with collinear antiferromagnetism (AFM). Given that the crystal symmetry breaks the time reversal symmetry when the antiparallel spin aligns along the [100] direction, the expectation vector of the anisotropic magnetic dipole operator ⟨t⟩ remains uncanceled along the [010] direction. Our Letter reveals that the magnetic dipole (Tz) term in the x-ray magnetic circular dichroism is induced by the residual ⟨t⟩. Because the features of the magnetic moment can be detected via absorption measurements even in the AFM, this technique will be useful for determining the magnetic phase, the Van Vleck–type paramagnet or the excitonic AFM in (t2g)4 system.

Description:

共線的な反強磁性体におけるXMCDの発現に関する理論計算を行った。

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• In Copyright
  

Keyword: Magnetism, XMCD, Altermagnetism

Date published: 2023-11-22

Publisher: American Physical Society (APS)

Journal:

• PHYSICAL REVIEW LETTERS (ISSN: 00319007) vol. 131 issue. 21 p. 216501-216501

Funding:

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.1103/PhysRevLett.131.216501

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Updated at: 2024-03-28 16:30:22 +0900

Published on MDR: 2024-03-28 16:30:22 +0900