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説明:

High harmonic generation (HHG) in solid-state materials is an emerging field of photonics research that can unveil the detailed electronic structure of materials, bond strengths and scattering processes of electrons. Although HHGin semiconducting and insulating materials has been intensively investigated both experimentally and theoretically, metals have rarely been explored because the strong screening effect of high-density free electrons is considered to significantly weaken the HHG signal. Here, we investigated HHG upon infrared excitation in bulk hexagonal metal titanium (Ti), a typical building block for practical lightweight structural materials. By analyzing the polarization dependence, the approach revealed the three-dimensional (3D) anisotropy in the electronic states. The results demonstrated the potential of HHG spectroscopy for characterizing 3D bonding anisotropy in metallic systems that are of fundamental importance for designing lightweight and strong structural materials.

権利情報:

• Creative Commons BY-NC-ND Attribution-NonCommercial-NoDerivs 4.0 International
  

キーワード: high harmonics generation, titanium, anisotropy, polarization

刊行年月日: 2024-12-18

出版者: Springer Science and Business Media LLC

掲載誌:

• Communications Physics (ISSN: 23993650) vol. 7 404

研究助成金:

• MEXT | Japan Society for the Promotion of Science 22K18322
• MEXT | Japan Society for the Promotion of Science 22K03484
• MEXT | Japan Society for the Promotion of Science 17H06124
• MEXT | Japan Society for the Promotion of Science 21H05017
• MEXT | Japan Society for the Promotion of Science 22H01820
• Light Metals Educational Foundation
• the Japan Institute of Metals and Materials

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5211

公開URL: https://doi.org/10.1038/s42005-024-01906-0

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更新時刻: 2024-12-24 13:59:07 +0900

MDRでの公開時刻: 2024-12-25 08:30:32 +0900