X-ray magnetic circular dichroism evidence of intrinsic $d$-wave altermagnetism in rutile-structure NiF$_2$
Fuente:
arXiv
Gespeichert in:
| Hauptverfasser: | , , , , , , , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2026
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866915832959860736 |
|---|---|
| author | Li, Zezhong Sakurai, Kosuke Chiu, Yiu-Fung Backes, Dirk Prabhakaran, Dharmalingam Furo, Mizuki Won, Choongjae Zhang, Wenliang Cheong, Sang-Wook Boothroyd, Andrew Garcia-Fernandez, Mirian Tippireddy, Sahil Kuneš, Jan Agrestini, Stefano Hariki, Atsushi Zhou, Ke-Jin |
| author_facet | Li, Zezhong Sakurai, Kosuke Chiu, Yiu-Fung Backes, Dirk Prabhakaran, Dharmalingam Furo, Mizuki Won, Choongjae Zhang, Wenliang Cheong, Sang-Wook Boothroyd, Andrew Garcia-Fernandez, Mirian Tippireddy, Sahil Kuneš, Jan Agrestini, Stefano Hariki, Atsushi Zhou, Ke-Jin |
| contents | We present the x-ray magnetic circular dichroism (XMCD) at the Ni $L_{2,3}$-edge as an evidence of the $d$-wave altermagnetism in rutile-structure NiF$_2$. Sizable XMCD signal is observed in excellent agreement with theoretical simulations. Owing to a considerable net magnetization due to spin canting, the XMCD spectrum consists of an altermagnetic signal as well as a non-negligible ferromagnetic contribution. We verify experimentally that the XMCD spectrum can be written as a sum of contributions from altermagnetism and weak ferromagnetism. Two experimental methods to isolate the ferromagnetic contribution are shown to yield essentially the same result. These are dependence of XMCD on applied magnetic fields below the Néel temperature and the XMCD measured in applied field above the Néel temperature. Our results demonstrate the utility of XMCD as a probe for altermagnetic materials with the coexisting weak ferromagnetism induced by the relativistic spin-orbit coupling. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_03694 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | X-ray magnetic circular dichroism evidence of intrinsic $d$-wave altermagnetism in rutile-structure NiF$_2$ Li, Zezhong Sakurai, Kosuke Chiu, Yiu-Fung Backes, Dirk Prabhakaran, Dharmalingam Furo, Mizuki Won, Choongjae Zhang, Wenliang Cheong, Sang-Wook Boothroyd, Andrew Garcia-Fernandez, Mirian Tippireddy, Sahil Kuneš, Jan Agrestini, Stefano Hariki, Atsushi Zhou, Ke-Jin Strongly Correlated Electrons We present the x-ray magnetic circular dichroism (XMCD) at the Ni $L_{2,3}$-edge as an evidence of the $d$-wave altermagnetism in rutile-structure NiF$_2$. Sizable XMCD signal is observed in excellent agreement with theoretical simulations. Owing to a considerable net magnetization due to spin canting, the XMCD spectrum consists of an altermagnetic signal as well as a non-negligible ferromagnetic contribution. We verify experimentally that the XMCD spectrum can be written as a sum of contributions from altermagnetism and weak ferromagnetism. Two experimental methods to isolate the ferromagnetic contribution are shown to yield essentially the same result. These are dependence of XMCD on applied magnetic fields below the Néel temperature and the XMCD measured in applied field above the Néel temperature. Our results demonstrate the utility of XMCD as a probe for altermagnetic materials with the coexisting weak ferromagnetism induced by the relativistic spin-orbit coupling. |
| title | X-ray magnetic circular dichroism evidence of intrinsic $d$-wave altermagnetism in rutile-structure NiF$_2$ |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2603.03694 |