Title :
Observation of phase transition in niobium nitride with THz time-domain spectroscopy
Author :
Saito, Shingo ; Takeda, Masanori ; Shimakage, Hisashi ; Uzawa, Yoshinori ; Wang, Zhen ; Sekine, Norihiko ; Hosako, Iwao ; Sakai, Kiyomi
Author_Institution :
Nat. Inst. for Inf. & Commun. Technol., Kobe, Japan
Abstract :
Transmission spectra of thin films of niobium nitride grown on a magnesium oxide substrate were measured by terahertz time-domain spectroscopy under several temperature conditions. Clear changes in the transparent terahertz waveform and transmission spectra of under / above a phase transition temperature were observed.
Keywords :
niobium compounds; sputter deposition; superconducting materials; superconducting thin films; superconducting transition temperature; terahertz wave spectra; MgO; NbN; THz time-domain spectroscopy; dc magnetron sputtering method; magnesium oxide substrate; niobium nitride; phase transition temperature; thin film growth; transmission spectra; transparent terahertz waveform spectra; Copper; Extraterrestrial measurements; Fingers; Frequency; Niobium compounds; Spectroscopy; Substrates; Superconducting materials; Superconducting transition temperature; Time domain analysis;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves, 2009. IRMMW-THz 2009. 34th International Conference on
Conference_Location :
Busan
Print_ISBN :
978-1-4244-5416-7
Electronic_ISBN :
978-1-4244-5417-4
DOI :
10.1109/ICIMW.2009.5324670
