Electrons and phonons are the carriers of heat in the a-b plane of the high-Tc superconductor YBa2Cu3O7. In the absence of boundary scattering, the a-b plane thermal conductivity and the mean free path of each carrier type are calculated as functions of temperature using kinetic theory, the two-fluid model of the superconducting state, and experimental data for the thermal conductivity and electrical resistivity of a single crystal. The reduction by boundary scattering of the effective a-b plane thermal conductivity along an epitaxial YBa2Cu3O7 film is predicted as a function of temperature and film thickness. The size effect on the phonon conductivity dominates over the size effect on the electron conductivity. The predicted electron mean free path is limited by scattering on defects and is in very good agreement with experimental data from infrared spectroscopy.
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Electron and Phonon Thermal Conduction in Epitaxial High-Tc Superconducting Films
K. E. Goodson,
K. E. Goodson
Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
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M. I. Flik
M. I. Flik
Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
Search for other works by this author on:
K. E. Goodson
Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
M. I. Flik
Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
J. Heat Transfer. Feb 1993, 115(1): 17-25 (9 pages)
Published Online: February 1, 1993
Article history
Received:
June 1, 1991
Revised:
April 1, 1992
Online:
May 23, 2008
Citation
Goodson, K. E., and Flik, M. I. (February 1, 1993). "Electron and Phonon Thermal Conduction in Epitaxial High-Tc Superconducting Films." ASME. J. Heat Transfer. February 1993; 115(1): 17–25. https://doi.org/10.1115/1.2910646
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