Do quasicrystals follow Wiedemann-Franz's law?



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Maciá Barber, Enrique Alfonso (2002) Do quasicrystals follow Wiedemann-Franz's law? Applied physics letters, 81 (1). pp. 88-90. ISSN 0003-6951

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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.

Uncontrolled Keywords:Al-Cu-Fe; Electronic transport-properties; Icosahedral quasi-crystals; Density-of-states; Thermoelectric-materials; Conductivity; Clusters; Alloys; Phases
Subjects:Sciences > Physics > Materials
Sciences > Physics > Solid state physics
ID Code:44813
Deposited On:02 Nov 2017 16:21
Last Modified:02 Nov 2017 16:21

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