1. Infrared studies of superconducting MgB2 thin films
- Author
-
Železný, Vladimír, Chvostová, Dagmar, Pajasová, Libuše, Plecenik, Andrej, Kúš, Peter, and Satrapinsky, Leonid
- Subjects
- *
SUPERCONDUCTIVITY , *MAGNESIUM compounds - Abstract
Reflectance of superconducting MgB2 thin films (
Tc≈35 K) has been measured in a broad spectral range from 30 to 110,000 cm−1. A typical plasma edge with a reflectance minimum at 15,000 cm−1 has been found. In the far-infrared region we observe a pronounced rise of the reflectance below 60 cm−1, which appears belowTc and can be associated with superconducting state. The temperature-dependent complex conductivity at infrared frequencies has been determined. The real and imaginary parts of the conductivity belowTc show a temperature evolution, which is characteristic for superconducting gap opening (decrease inσ1 and rise inσ2 ). [Copyright &y& Elsevier]- Published
- 2003
- Full Text
- View/download PDF