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Anisotropic Thermal Conductivity of Superconducting Lanthanum Cuprate

Published online by Cambridge University Press:  28 February 2011

D.T. Morelli ,
G.L. Doll ,
J.P. Heremans ,
H.P. Jenssen ,
A. Cassanho  and
M.S. Dresselhaus
D.T. Morelli
Affiliation:
Physics Department, General Motors Research Laboratories, 30500 Mound Road, Warren, MI 48090
G.L. Doll
Affiliation:
Physics Department, General Motors Research Laboratories, 30500 Mound Road, Warren, MI 48090
J.P. Heremans
Affiliation:
Physics Department, General Motors Research Laboratories, 30500 Mound Road, Warren, MI 48090
H.P. Jenssen
Affiliation:
Center for Materials Science and Engineering, M.I.T., 77 Massachusetts Avenue, Cambridge, MA 02139
A. Cassanho
Affiliation:
Center for Materials Science and Engineering, M.I.T., 77 Massachusetts Avenue, Cambridge, MA 02139
M.S. Dresselhaus
Affiliation:
Center for Materials Science and Engineering, M.I.T., 77 Massachusetts Avenue, Cambridge, MA 02139
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Abstract

The thermal conductivities of superconducting, Sr-doped lanthanum copper oxide single crystals have been measured from room temperature to below 100 mK parallel and perpendicular to the copper oxide planes. While the results indicate that the heat conduction is strongly anisotropic, the data have been analyzed in terms of a modified Bardeen-Rickhayzen-Tewordt theory of lattice thermal conductivity. It is shown that while electron scattering plays an important role in limiting the in-plane heat conductivity, this scattering channel is masked by other mechanisms for heat transport across the planes.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 169: Symposium M – High Temperature Superconductors: Fundamental Properties and Novel Materials Processing , 1989 , 1101
Copyright
Copyright © Materials Research Society 1990

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References

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