Coherent multiphoton photoemission spectroscopy of image-potential state on Ir(111) surface
Multiphoton photoemission provides a means to investigate unoccupied electronic states via nonlinear light-matter interactions. In this work, we employ five-photon photoemission spectroscopy to identify, for the first time, the image-potential state (IPS) on the Ir(111) surface. Distinct from common...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2025-01-01
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| Series: | Applied Physics Express |
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| Online Access: | https://doi.org/10.35848/1882-0786/addb1e |
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| author | Yu-Chan Tai Chih-Wei Luo Noriaki Takagi Hiroshi Ishida Chun-Liang Lin Ryuichi Arafune |
| author_facet | Yu-Chan Tai Chih-Wei Luo Noriaki Takagi Hiroshi Ishida Chun-Liang Lin Ryuichi Arafune |
| author_sort | Yu-Chan Tai |
| collection | DOAJ |
| description | Multiphoton photoemission provides a means to investigate unoccupied electronic states via nonlinear light-matter interactions. In this work, we employ five-photon photoemission spectroscopy to identify, for the first time, the image-potential state (IPS) on the Ir(111) surface. Distinct from commonly studied noble metals such as Cu and Ag, the Ir(111) electronic structure leads to a strong sensitivity to excitation energy: a reduction from 1.57 eV to 1.49 eV significantly diminishes the signal. The theoretical analysis attributes this effect to the d -band proximity to the Fermi level, which influences the initial-state population and transition probabilities governing the multiphoton excitation pathways. |
| format | Article |
| id | doaj-art-27f4e29d9c744deb8d3f00df06012ab0 |
| institution | OA Journals |
| issn | 1882-0786 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Applied Physics Express |
| spelling | doaj-art-27f4e29d9c744deb8d3f00df06012ab02025-08-20T02:05:31ZengIOP PublishingApplied Physics Express1882-07862025-01-0118606200110.35848/1882-0786/addb1eCoherent multiphoton photoemission spectroscopy of image-potential state on Ir(111) surfaceYu-Chan Tai0https://orcid.org/0009-0000-3010-9283Chih-Wei Luo1https://orcid.org/0000-0002-6453-7435Noriaki Takagi2https://orcid.org/0000-0002-0799-9772Hiroshi Ishida3https://orcid.org/0000-0003-2080-1561Chun-Liang Lin4https://orcid.org/0000-0001-8781-3650Ryuichi Arafune5https://orcid.org/0000-0003-4371-6116Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) , Tsukuba, Japan; Dept. of Electrophysics, National Yang Ming Chiao Tung University (NYCU) , Hsinchu City, TaiwanDept. of Electrophysics, National Yang Ming Chiao Tung University (NYCU) , Hsinchu City, Taiwan; Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University (NYCU) , Hsinchu, Taiwan; Institute of Physics, National Yang Ming Chiao Tung University (NYCU) , Hsinchu, Taiwan; National Synchrotron Radiation Research Center , Hsinchu, TaiwanGraduate School of Human and Environmental Studies, Kyoto University , Kyoto, JapanCollege of Humanities and Sciences, Nihon University , Tokyo, JapanDept. of Electrophysics, National Yang Ming Chiao Tung University (NYCU) , Hsinchu City, TaiwanResearch Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) , Tsukuba, JapanMultiphoton photoemission provides a means to investigate unoccupied electronic states via nonlinear light-matter interactions. In this work, we employ five-photon photoemission spectroscopy to identify, for the first time, the image-potential state (IPS) on the Ir(111) surface. Distinct from commonly studied noble metals such as Cu and Ag, the Ir(111) electronic structure leads to a strong sensitivity to excitation energy: a reduction from 1.57 eV to 1.49 eV significantly diminishes the signal. The theoretical analysis attributes this effect to the d -band proximity to the Fermi level, which influences the initial-state population and transition probabilities governing the multiphoton excitation pathways.https://doi.org/10.35848/1882-0786/addb1eimage-potential stateslaser photoemission spectroscopyMultiphoton excitationnonlinear light–matter interaction |
| spellingShingle | Yu-Chan Tai Chih-Wei Luo Noriaki Takagi Hiroshi Ishida Chun-Liang Lin Ryuichi Arafune Coherent multiphoton photoemission spectroscopy of image-potential state on Ir(111) surface Applied Physics Express image-potential states laser photoemission spectroscopy Multiphoton excitation nonlinear light–matter interaction |
| title | Coherent multiphoton photoemission spectroscopy of image-potential state on Ir(111) surface |
| title_full | Coherent multiphoton photoemission spectroscopy of image-potential state on Ir(111) surface |
| title_fullStr | Coherent multiphoton photoemission spectroscopy of image-potential state on Ir(111) surface |
| title_full_unstemmed | Coherent multiphoton photoemission spectroscopy of image-potential state on Ir(111) surface |
| title_short | Coherent multiphoton photoemission spectroscopy of image-potential state on Ir(111) surface |
| title_sort | coherent multiphoton photoemission spectroscopy of image potential state on ir 111 surface |
| topic | image-potential states laser photoemission spectroscopy Multiphoton excitation nonlinear light–matter interaction |
| url | https://doi.org/10.35848/1882-0786/addb1e |
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