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http://dx.doi.org/10.9714/psac.2013.15.1.011

Terahertz time-domain transmission and reflection spectroscopy of niobium  

Hong, Taeyoon (Department of Physics, Yonsei University)
Choi, Kyujin (Department of Physics, Yonsei University)
Park, Byoung-Cheol (Department of Physics, Yonsei University)
Ha, Taewoo (Department of Physics, Yonsei University)
Sim, Kyung Ik (Department of Physics, Yonsei University)
Ha, Dong-Gwang (Korea Research Institute of Standards and Science)
Chong, Yonuk (Korea Research Institute of Standards and Science)
Kim, Jae Hoon (Department of Physics, Yonsei University)
Publication Information
Progress in Superconductivity and Cryogenics / v.15, no.1, 2013 , pp. 11-13 More about this Journal
Abstract
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 $50cm^{-1}$. 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.
Keywords
Terahertz spectroscopy; Niobium; Superconductor;
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