Do quasicrystals follow Wiedemann-Franz's law?
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2002
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American Institute of Physics
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Abstract
In this work we present a theoretical study on the thermal and electrical conductivities of quasicrystals. By considering a realistic model for the spectral conductivity we derive closed analytical expressions for the transport coefficients which allow us to study the temperature dependence of the Lorenz ratio L( T) = κ_(e)(T)/ Tσ( T) at different temperature regimes. We conclude that quasicrystals closely follow Wiedemann- Franz's law over a wide temperature range.
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© 2002 American Institute of Physics.
The author warmly thanks C. Díaz-Guerra, T. Grenet, C. Landauro, P. Häussler, Z. M. Stadnik, and P. A. Thiel for interesting conversations. The author acknowledges M. V. Hernández for a critical reading of the manuscript. This work is supported by the Consejería de Educación de la CAM and European Union FEDER through Project No. 07N/0070/ 2001.