WEKO3
アイテム
Visualizing electronic inhomogeneity using spatially-resolved ARPES system developed at NanoTerasu
https://repo.qst.go.jp/records/2002481
https://repo.qst.go.jp/records/2002481bb50eb49-3217-4641-8d8f-13cb9228dc01
| アイテムタイプ | 会議発表用資料 / Presentation(1) | |||||||
|---|---|---|---|---|---|---|---|---|
| 公開日 | 2025-11-29 | |||||||
| タイトル | ||||||||
| タイトル | Visualizing electronic inhomogeneity using spatially-resolved ARPES system developed at NanoTerasu | |||||||
| 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_c94f | |||||||
| 資源タイプ | conference presentation | |||||||
| 著者 |
Iwasawa Hideaki
× Iwasawa Hideaki
|
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| 抄録 | ||||||||
| 内容記述 | In strongly correlated electron systems, dramatic quantum emergent phenomena, such as high-temperature superconductivity and colossal magnetoresistance, are closely linked to multiple competing and coexisting phases and orders. These phenomena are widely believed to originate from strong electron-electron interactions. It is also well established that the emergence of quantum phenomena in strongly correlated electron systems is often accompanied by electronic self-organization, that is, spatially inhomogeneities in electronic states across various length scales. Understanding this self-organization is crucial for elucidating the macroscopic physical properties of these materials, as it may provide a key link between microscopic interactions and emergent quantum phenomena. For instance, in cuprate high-temperature superconductors, scanning tunneling microscopy and spectroscopy (STM/STS) studies have revealed nanoscale spatial inhomogeneity in the superconducting gap [1]. However, determining which interactions, such as electron correlations, electron-lattice interactions, and electron-magnetic interactions, are involved, and how they drive electronic selforganization and determine macroscopic properties, remains a major challenge.In this talk, we present two topics highlighting the advances in spatially resolved ARPES techniques. In the first part, we demonstrate the capability of high-resolution micro-focused ARPES (micro-ARPES) by showing how it reveals spatial inhomogeneities in the electronic states, including many-body interactions [2] and the superconducting gap [3] in Bi₂Sr₂CaCu₂O₈₊δ (Bi2212). In the second part, we introduce the specifications of newly developed spatially resolved ARPES systems at BL06U [4], NanoTerasu. Representative ARPES data obtained from strongly correlated electron systems, such as cuprates and ruthenates, will also be presented to demonstrate the outstanding performance and measurement quality achieved by both the beamline and the micro-ARPES system at NanoTerasu.References[1] K. McElroy et al., Phys. Rev. Lett. 94, 197005 (2005)[2] H. Iwasawa et al., Phys. Rev. Res. 5, 043266 (2023).[3] Y. Miyai et al., Sci. Technol. Adv. Mater. 25, 2379238 (2024).[4] K. Horiba et al., J. Phys.: Conf. Ser. 2380, 012034 (2022). | |||||||
| 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 | 2025-11-27 | |||||||
