Laser-based angle-resolved photoemission spectroscopy with micrometer spatial resolution and detection of three-dimensional spin vector
Abstract We have developed a state-of-the-art apparatus for laser-based spin- and angle-resolved photoemission spectroscopy with micrometer spatial resolution (µ-SARPES). This equipment is realized by the combination of a high-resolution photoelectron spectrometer, a 6 eV laser with high photon flux...
| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-01-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-47719-z |
| _version_ | 1797363334223233024 |
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| author | Takuma Iwata T. Kousa Y. Nishioka K. Ohwada K. Sumida E. Annese M. Kakoki Kenta Kuroda H. Iwasawa M. Arita S. Kumar A. Kimura K. Miyamoto T. Okuda |
| author_facet | Takuma Iwata T. Kousa Y. Nishioka K. Ohwada K. Sumida E. Annese M. Kakoki Kenta Kuroda H. Iwasawa M. Arita S. Kumar A. Kimura K. Miyamoto T. Okuda |
| author_sort | Takuma Iwata |
| collection | DOAJ |
| description | Abstract We have developed a state-of-the-art apparatus for laser-based spin- and angle-resolved photoemission spectroscopy with micrometer spatial resolution (µ-SARPES). This equipment is realized by the combination of a high-resolution photoelectron spectrometer, a 6 eV laser with high photon flux that is focused down to a few micrometers, a high-precision sample stage control system, and a double very-low-energy-electron-diffraction spin detector. The setup achieves an energy resolution of 1.5 (5.5) meV without (with) the spin detection mode, compatible with a spatial resolution better than 10 µm. This enables us to probe both spatially-resolved electronic structures and vector information of spin polarization in three dimensions. The performance of µ-SARPES apparatus is demonstrated by presenting ARPES and SARPES results from topological insulators and Au photolithography patterns on a Si (001) substrate. |
| first_indexed | 2024-03-08T16:19:54Z |
| format | Article |
| id | doaj.art-dff97e867d8e40eda2c391a79b438f6e |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-03-08T16:19:54Z |
| publishDate | 2024-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-dff97e867d8e40eda2c391a79b438f6e2024-01-07T12:26:47ZengNature PortfolioScientific Reports2045-23222024-01-011411810.1038/s41598-023-47719-zLaser-based angle-resolved photoemission spectroscopy with micrometer spatial resolution and detection of three-dimensional spin vectorTakuma Iwata0T. Kousa1Y. Nishioka2K. Ohwada3K. Sumida4E. Annese5M. Kakoki6Kenta Kuroda7H. Iwasawa8M. Arita9S. Kumar10A. Kimura11K. Miyamoto12T. Okuda13Graduate School of Advanced Science and Engineering, Hiroshima UniversityGraduate School of Advanced Science and Engineering, Hiroshima UniversityGraduate School of Advanced Science and Engineering, Hiroshima UniversityGraduate School of Advanced Science and Engineering, Hiroshima UniversityMaterials Sciences Research Center, Japan Atomic Energy AgencyBrazilian Center for Research in Physics, Rua Dr. Xavier Sigaud 150Graduate School of Advanced Science and Engineering, Hiroshima UniversityGraduate School of Advanced Science and Engineering, Hiroshima UniversityInstitute for Advanced Synchrotron Light Source, National Institutes for Quantum Science and TechnologyHiroshima Synchrotron Radiation Center, Hiroshima UniversityHiroshima Synchrotron Radiation Center, Hiroshima UniversityGraduate School of Advanced Science and Engineering, Hiroshima UniversityHiroshima Synchrotron Radiation Center, Hiroshima UniversityHiroshima Synchrotron Radiation Center, Hiroshima UniversityAbstract We have developed a state-of-the-art apparatus for laser-based spin- and angle-resolved photoemission spectroscopy with micrometer spatial resolution (µ-SARPES). This equipment is realized by the combination of a high-resolution photoelectron spectrometer, a 6 eV laser with high photon flux that is focused down to a few micrometers, a high-precision sample stage control system, and a double very-low-energy-electron-diffraction spin detector. The setup achieves an energy resolution of 1.5 (5.5) meV without (with) the spin detection mode, compatible with a spatial resolution better than 10 µm. This enables us to probe both spatially-resolved electronic structures and vector information of spin polarization in three dimensions. The performance of µ-SARPES apparatus is demonstrated by presenting ARPES and SARPES results from topological insulators and Au photolithography patterns on a Si (001) substrate.https://doi.org/10.1038/s41598-023-47719-z |
| spellingShingle | Takuma Iwata T. Kousa Y. Nishioka K. Ohwada K. Sumida E. Annese M. Kakoki Kenta Kuroda H. Iwasawa M. Arita S. Kumar A. Kimura K. Miyamoto T. Okuda Laser-based angle-resolved photoemission spectroscopy with micrometer spatial resolution and detection of three-dimensional spin vector Scientific Reports |
| title | Laser-based angle-resolved photoemission spectroscopy with micrometer spatial resolution and detection of three-dimensional spin vector |
| title_full | Laser-based angle-resolved photoemission spectroscopy with micrometer spatial resolution and detection of three-dimensional spin vector |
| title_fullStr | Laser-based angle-resolved photoemission spectroscopy with micrometer spatial resolution and detection of three-dimensional spin vector |
| title_full_unstemmed | Laser-based angle-resolved photoemission spectroscopy with micrometer spatial resolution and detection of three-dimensional spin vector |
| title_short | Laser-based angle-resolved photoemission spectroscopy with micrometer spatial resolution and detection of three-dimensional spin vector |
| title_sort | laser based angle resolved photoemission spectroscopy with micrometer spatial resolution and detection of three dimensional spin vector |
| url | https://doi.org/10.1038/s41598-023-47719-z |
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