We report an infrared reflectivity study of epitaxial YBa2Cu307-6 thin films. Results for samples with different values of To, obtained by Fe doping or ion bombardment, give evidence for a gap 2A(0) ~ 7 kBTc. For ion bombarded films we find a soft mode that may correspond to a giant-amplitude oxygen
Far-Infrared Reflectivity and Dynamical Conductivity of an Epitaxial YBa 2 Cu 3 O 7-δ Thin Film
✍ Scribed by Schützmann, J; Ose, W; Keller, J; Renk, K. F; Roas, B; Schultz, L; Saemann-Ischenko, G
- Book ID
- 123609041
- Publisher
- EDP Sciences
- Year
- 1989
- Tongue
- English
- Weight
- 547 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0295-5075
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We report on the far-infrared reflectivity and absorptivity of high quality YBa2Cu307\_b thin films. The absorptivity can be characterized by three contributions: free carriers absorption that disappears below T e , an absorption process that sets in near 400 cm-I (21::1/kBT e ;::j 6) and is almost
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