Journal
2023 48TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES, IRMMW-THZ
Volume -, Issue -, Pages -Publisher
IEEE
DOI: 10.1109/IRMMW-THz57677.2023.10298905
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This study reports the experimental and calculated results of the THz surface plasmon resonance (THz-SPR) of (Bi, Sb)(2)(Se, Te)(3) for the first time. It is found that the bulk electron influence in the band structure has a small contribution to the surface plasmon resonance, and Bi2Se3 has the highest Q value among graphene or topological insulators below 1 THz.
Terahertz (THz) wave, corresponding to intermolecular binding energy, is the key to realize a non-labeling bio-medical sensor. We aim to enhance the sensitivity by a selective resonant excitation effect of the specific binding and surface plasmon at the THz band. Here, we report the THz-SPR of (Bi, Sb)(2)(Se, Te)(3) in both experiments and calculations for the first time. We have revealed that bulk electron influence seen in band structure may not contribute much to SPR, and Bi2Se3 has the highest Q value among graphene or topological insulator below 1 THz.
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