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Theoretical Study of Magnetic Circular Dichroism in X-ray Photoemission Spectroscopy for Itinerant 3d Transition Metals
https://repo.qst.go.jp/records/2002630
https://repo.qst.go.jp/records/200263095ca05e1-3f68-4fa3-8df9-be3260c081ae
| アイテムタイプ | 会議発表用資料 / Presentation(1) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2026-01-21 | |||||||||
| タイトル | ||||||||||
| タイトル | Theoretical Study of Magnetic Circular Dichroism in X-ray Photoemission Spectroscopy for Itinerant 3d Transition Metals | |||||||||
| 言語 | en | |||||||||
| 言語 | ||||||||||
| 言語 | eng | |||||||||
| 資源タイプ | ||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6670 | |||||||||
| 資源タイプ | conference poster | |||||||||
| 著者 |
Kobayashi Hiroki
× Kobayashi Hiroki
× Nomura Takuji
|
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| 抄録 | ||||||||||
| 内容記述 | Magnetic Circular Dichroism in X-ray Photoemission Spectroscopy (MCD-XPS) is a powerful tool for probing element-specific magnetic properties of materials. MCD-XPS measures the difference in the number of photoelectrons when right- and left-handed circular polarized X-rays are irradiated onto a magnetized material. In this study, we develop a calculation method incorporating electron-hole pair excitations on 3d bands as many-body effects.In our approach, ground-state electronic structures are determined by first-principles band calculations. Using Keldysh Green’s function technique for nonequilibrium states, we calculate MCD-XPS spectra within both lowest- and higher-order perturbation. Our method successfully reproduces experimental XPS-MCD spectra. We demonstrate that electron-hole pair excitations play an important role in MCD-XPS process. | |||||||||
| 会議概要（会議名, 開催地, 会期, 主催者等） | ||||||||||
| 内容記述 | QST International Conference 2025 | |||||||||
| 発表年月日 | ||||||||||
| 日付 | 2025-11-26 | |||||||||
