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Thermal conductivity of Zn, Pr and Tb doped YBCO single crystals: Theory and experiment

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Abstract

The thermal conductivity K(T) vs temperature has been measured for (Y,Pr)Ba2Cu3O7, (Y,Tb)Ba2Cu3O7 and YBa2(Cu,Zn)3O7 single crystals from 10≤T≤280K. For YBa2Cu3O7(YBCO), a strong enhancement in K(T) is observed for T≤Tcwith a peak in K(T) at approximately T≈Tc/2 with a sharp change in slope of K(T) at Tc. These results are similar to those reported previously. For the selectively doped YBCO, the peak in K(T) is shifted to lower temperatures and occurs at T≈ 20K independent of Tc and the impurity concentration. In addition, the sharp change in slope of K(T) at Tc is not apparent for the doped crystals. These results are discussed along with a theoretical model for electronic conduction including both impurity and inelastic scattering from spin fluctuations.

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Authors and Affiliations

  1. Department of Physics, Florida State University, 32306, Tallahassee, FL

    P. F. Henning

  2. National High Magnetic Field Laboratory, Florida State University Tallahassee, 32306-4005, FL

    G. Cao, J. E. Crow & W. O. Putikka

  3. Physics Department, University of Florida, 32611, Gainesville, FL

    P. J. Hirschfeld

Authors
  1. P. F. Henning
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  2. G. Cao
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  3. J. E. Crow
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  4. W. O. Putikka
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  5. P. J. Hirschfeld
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Henning, P.F., Cao, G., Crow, J.E. et al. Thermal conductivity of Zn, Pr and Tb doped YBCO single crystals: Theory and experiment. J Supercond 8, 453–456 (1995). https://doi.org/10.1007/BF00722828

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  • DOI: https://doi.org/10.1007/BF00722828

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