Far-Ultraviolet Plexciton Formation in Water-Covered Indium Clusters
In this work, we study the plexciton in the far-ultraviolet region formed between indium nanoclusters and water molecules. The indium clusters are fabricated on graphene under ultrahigh vacuum conditions and show a strong localized surface plasmon polariton (LSP) absorption band at 6-7 eV. Adsorption of water molecules onto the clusters at 115 K induces a band splitting larger than 1 eV, indicating a strong coupling between the LSP and water 4a<sub>1</sub> ← 1b<sub>1</sub> transition. The spectral evolution as a function of the water coverage is revealed, enabling the determination of the decay length of the plexciton collective effect to be ∼8 nm.
Authors
- Takanori Koitaya (ORCID: https://orcid.org/0000-0001-8793-1518)
- K. Watanabe (ORCID: https://orcid.org/0000-0003-4156-1181)
- Hiroshi Okuyama (ORCID: https://orcid.org/0000-0002-6031-0612)
- Tomokazu Yasuike (ORCID: https://orcid.org/0000-0001-6525-9396)
- Naoki Nagatsuka
- Daiki Yamamoto (ORCID: https://orcid.org/0000-0001-6852-2954)
- Ryoto Matsuguchi
Institutions
- The Open University of Japan (JP)
- Kyoto University (JP)
- Department of Environment and Natural Resources (PH)
- Graduate School USA (US)
Publication Details
- Journal
- The Journal of Physical Chemistry Letters
- Published
- 2025-01-27
- DOI
- https://doi.org/10.1021/acs.jpclett.5c00001
- Citations
- 2
- Primary Topic
- Strong Light-Matter Interactions
- Type
- article
- Field-Weighted Citation Impact
- 2.49
Funders
- Japan Society for the Promotion of Science
- Core Research for Evolutional Science and Technology