Circular Dichroism in Resonant Inelastic X-ray Scattering: Probing Altermagnetic Domains in MnTe
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arXiv
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| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866917065997156352 |
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| author | Takegami, D. Aoyama, T. Okauchi, T. Yamaguchi, T. Tippireddy, S. Agrestini, S. García-Fernández, M. Mizokawa, T. Ohgushi, K. Zhou, Ke-Jin Chaloupka, J. Kuneš, J. Hariki, A. Suzuki, H. |
| author_facet | Takegami, D. Aoyama, T. Okauchi, T. Yamaguchi, T. Tippireddy, S. Agrestini, S. García-Fernández, M. Mizokawa, T. Ohgushi, K. Zhou, Ke-Jin Chaloupka, J. Kuneš, J. Hariki, A. Suzuki, H. |
| contents | X-ray magnetic circular dichroism provides a means to identify ferromagnetic, chiral, and altermagnetic orders via their time-reversal-symmetry ($\mathcal{T}$) breaking. However, differentiating magnetic domains related by crystallographic symmetries remains a technical challenge. Here we reveal a circular dichroism (CD) in the resonant inelastic x-ray scattering (RIXS) spectra from the altermagnetic MnTe. The azimuthal dependence of the RIXS-CD intensity of the magnon excitations indicates a dominant occupation of a single altermagnetic domain. The RIXS-CD in our scattering geometry is ascribed to the mirror-symmetry breaking associated with the $\mathcal{T}$-broken altermagnetic order. Our results establish RIXS-CD as a domain-sensitive probe of elementary excitations in quantum materials. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_10809 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Circular Dichroism in Resonant Inelastic X-ray Scattering: Probing Altermagnetic Domains in MnTe Takegami, D. Aoyama, T. Okauchi, T. Yamaguchi, T. Tippireddy, S. Agrestini, S. García-Fernández, M. Mizokawa, T. Ohgushi, K. Zhou, Ke-Jin Chaloupka, J. Kuneš, J. Hariki, A. Suzuki, H. Strongly Correlated Electrons X-ray magnetic circular dichroism provides a means to identify ferromagnetic, chiral, and altermagnetic orders via their time-reversal-symmetry ($\mathcal{T}$) breaking. However, differentiating magnetic domains related by crystallographic symmetries remains a technical challenge. Here we reveal a circular dichroism (CD) in the resonant inelastic x-ray scattering (RIXS) spectra from the altermagnetic MnTe. The azimuthal dependence of the RIXS-CD intensity of the magnon excitations indicates a dominant occupation of a single altermagnetic domain. The RIXS-CD in our scattering geometry is ascribed to the mirror-symmetry breaking associated with the $\mathcal{T}$-broken altermagnetic order. Our results establish RIXS-CD as a domain-sensitive probe of elementary excitations in quantum materials. |
| title | Circular Dichroism in Resonant Inelastic X-ray Scattering: Probing Altermagnetic Domains in MnTe |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2502.10809 |