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Infrared studies of superconducting MgB2 thin films
- Source :
-
Physica C . May2003, Vol. 388/389, p129. 2p. - Publication Year :
- 2003
-
Abstract
- Reflectance of superconducting MgB2 thin films (<f>Tc&ap;35</f> 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 below <f>Tc</f> 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 below <f>Tc</f> show a temperature evolution, which is characteristic for superconducting gap opening (decrease in <f>σ1</f> and rise in <f>σ2</f>). [Copyright &y& Elsevier]
- Subjects :
- *SUPERCONDUCTIVITY
*MAGNESIUM compounds
Subjects
Details
- Language :
- English
- ISSN :
- 09214534
- Volume :
- 388/389
- Database :
- Academic Search Index
- Journal :
- Physica C
- Publication Type :
- Academic Journal
- Accession number :
- 9892702
- Full Text :
- https://doi.org/10.1016/S0921-4534(02)02679-5