[11a-A22-1~9] 4.6 Terahertz Photonics

9:45 AM - 10:00 AM JST(12:45 AM - 1:00 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation AwardEnglish Presentation

[11a-A22-3] Observation of Magnetoplasmon-Phonon Coupling in InSb Using Magneto-Optical Terahertz Time-Domain Ellipsometry

〇(D)Zixi Zhao¹, Verdad C. Agulto¹, Atsuki Kamio¹, Kosaku Kato¹, Thanh Nhat Khoa Phan¹, Toshiyuki Iwamoto^2,1, Toshihiko Shimizu¹, Nobuhiko Sarukura¹, Makoto Nakajima¹ (1.ILE, Univ. of Osaka, 2.PNP)

Keywords:

Semiconductor evaluation,Magneto-optical terahertz time-domain ellipsometry (MO-THz-TDE),Longitudinal optical phonon-plasmon coupling (LOPC)

In this study, an undoped indium antimonide (InSb) sample was evaluated in the 1–3 THz frequency range using magneto-optical terahertz time-domain ellipsometry (MO-THz-TDE). To accurately analyze the measured spectra, an improved dielectric model incorporating both longitudinal optical phonon-plasmon coupling (LOPC) and magnetoplasmon effects was proposed. By applying this model to the measured spectra, the carrier transport properties of InSb were determined, while the observed resonance confirmed the plasmon–phonon coupling in InSb. These results highlight the potential of MO-THz-TDE as a powerful tool for comprehensive evaluation of carrier dynamics in semiconductors.