Characteristic features of the temperature dependence of the surface impedance of YBa2Cu3O6.95 single crystals |
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Authors: | M R Trunin A A Zhukov G A Emel’chenko I G Naumenko |
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Institution: | (1) Institute of Solid-State Physics, Russian Academy of Sciences, 142432 Chernogolovka, Moscow District, Russia |
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Abstract: | The real and imaginary parts of the surface impedance Z
s
=R
s
+iX
s
of YBa2Cu3O6.95 single crystals are measured at a frequency ω/π=9.4 GHz. The quantities R
s
(T) and X
s
(T) are linear functions of temperature for T<0.3T
c
(T
c
=93.5 K). A maximum of R
s
(T) and a plateau of X
s
(T) are observed in the interval 35<T<65 K. Our experimental data, just as all recent measurements of R
s
(T) in YBa2Cu3O6.95 single crystals in the temperature range 0<T<1.3T
c
, are described well in a two-fluid model which assumes electron-phonon scattering of quasiparticles.
Pis’ma Zh. éksp. Teor. Fiz. 65, No. 12, 893–898 (25 June 1997) |
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Keywords: | |
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