Next Article in Journal
Bibliometric Analysis of Social Robotics Research: Identifying Research Trends and Knowledgebase
Previous Article in Journal
A Neural Parametric Singing Synthesizer Modeling Timbre and Expression from Natural Songs
Previous Article in Special Issue
Pt-Based Nanostructures for Observing Genuine SERS Spectra of p-Aminothiophenol (PATP) Molecules
Article

Plasmon Modulation Spectroscopy of Noble Metals to Reveal the Distribution of the Fermi Surface Electrons in the Conduction Band

1
Department of Physics, Faculty of Science, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
2
Centre for Advanced Nanotechnology, University of Toronto, 170 College Street, Toronto, ON M5S 3E3, Canada
3
Department of Electronics and Information Technology, Faculty of Science and Technology, Hirosaki University, 3 Bunkyo-Cho, Hirosaki, Aomori 036-8561, Japan
4
Department of Applied Physics and Chemistry, and Institute for Laser Science, University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585 Japan
*
Author to whom correspondence should be addressed.
Appl. Sci. 2017, 7(12), 1315; https://doi.org/10.3390/app7121315
Received: 15 November 2017 / Revised: 14 December 2017 / Accepted: 15 December 2017 / Published: 18 December 2017
(This article belongs to the Special Issue Laser Interaction with Plasmonic Nanostructures)
To directly access the dynamics of electron distribution near the Fermi-surface after plasmon excitation, pump-probe spectroscopy was performed by pumping plasmons on noble-metal films and probing the interband transition. Spectral change in the interband transitions is sensitive to the electron distribution near the Fermi-surface, because it involves the d valence-band to the conduction band transitions and should reflect the k-space distribution dynamics of electrons. For the continuous-wave pump and probe experiment, the plasmon modulation spectra are found to differ from both the current modulation and temperature difference spectra, possibly reflecting signatures of the plasmon wave function. For the femtosecond-pulse pump and probe experiment, the transient spectra agree well with the known spectra upon the excitation of the respective electrons resulting from plasmon relaxation, probably because the lifetime of plasmons is shorter than the pulse duration. View Full-Text
Keywords: surface plasmon; silver; gold; modulation spectroscopy; plasmon wavefunction; Fermi surface; interband transition; conduction band; k-space distribution; femtosecond pump-probe spectroscopy; plasmon modulation spectra; current modulation spectra; temperature difference spectra surface plasmon; silver; gold; modulation spectroscopy; plasmon wavefunction; Fermi surface; interband transition; conduction band; k-space distribution; femtosecond pump-probe spectroscopy; plasmon modulation spectra; current modulation spectra; temperature difference spectra
Show Figures

Figure 1

MDPI and ACS Style

Takagi, K.; Nair, S.V.; Saito, J.; Seto, K.; Watanabe, R.; Kobayashi, T.; Tokunaga, E. Plasmon Modulation Spectroscopy of Noble Metals to Reveal the Distribution of the Fermi Surface Electrons in the Conduction Band. Appl. Sci. 2017, 7, 1315. https://doi.org/10.3390/app7121315

AMA Style

Takagi K, Nair SV, Saito J, Seto K, Watanabe R, Kobayashi T, Tokunaga E. Plasmon Modulation Spectroscopy of Noble Metals to Reveal the Distribution of the Fermi Surface Electrons in the Conduction Band. Applied Sciences. 2017; 7(12):1315. https://doi.org/10.3390/app7121315

Chicago/Turabian Style

Takagi, Kentaro, Selvakumar V. Nair, Jumpei Saito, Keisuke Seto, Ryosuke Watanabe, Takayoshi Kobayashi, and Eiji Tokunaga. 2017. "Plasmon Modulation Spectroscopy of Noble Metals to Reveal the Distribution of the Fermi Surface Electrons in the Conduction Band" Applied Sciences 7, no. 12: 1315. https://doi.org/10.3390/app7121315

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop