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Infrared reflectivity and conductivity of YBa2Cu3O7−δ thin films

✍ Scribed by K.F. Renk; J. Schützmann; W. Ose; M. Franz; J. Keller; U. Hofmann; H. Eschrig; B. Roas; B. Hensel; G. Saemann-Ischenko

Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
143 KB
Volume
162-164
Category
Article
ISSN
0921-4534

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✦ Synopsis

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 vibration. The dynamical conductivity in the normal state can be described by a strongly frequency dependent conductivity in the Cu02 planes and a weakly frequency dependent conductivity in the Cu03 chains.

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