Taeyoon Hong, Kyujin Choi, Byoung-Cheol Park, Taewoo Ha, Kyung Ik Sim, Dong-Gwang Ha, Yonuk Chong, Jae Hoon Kim
언어
한국어(KOR)
URL
https://www.earticle.net/Article/A197082
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원문정보
초록
영어
We have developed a terahertz time-domain spectroscopy (THz-TDS) system for transmission and reflection measurements of metallic thin films. Using our THz-TDS system, we studied the conventional superconductor niobium (Nb) in the normal state in the spectral range from 5 to 50 cm-1. Both the real and imaginary parts of the conductivity are acquired without Kramers-Kronig analysis. Nb exhibits a nearly frequency independent real conductivity spectrum in the terahertz range, with a very small imaginary part.