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Dynamical conductivity of high-Tc superconductors

✍ Scribed by K.F. Renk; H. Eschrig; U. Hofmann; J. Keller; J. Schützmann; W. Ose

Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
615 KB
Volume
165
Category
Article
ISSN
0921-4534

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✦ Synopsis

We present an analysis of the far-and mid-infrared conductivity of YBa2Cu30,_, We suppose that two types of low-lying electronic excitations in high-T, superconductors are present, namely mobile quasi holes in the Cu02 planes and almost localized doping electron states in the CuOp chains. We explain the far-infrared conductivity at low temperature (T-x T,) with a two-band model derived from the two-layer structure of YBaaCusO,_, This model leads to two gap values, well above and below the BCS K.t;. superconduc'tor.c

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