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Modeling the electrical conductivity of icosahedral quasicrystals

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Maciá Barber, Enrique Alfonso (2000) Modeling the electrical conductivity of icosahedral quasicrystals. Physical review B, 61 (13). pp. 8771-8777. ISSN 1098-0121

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URL Oficial: http://dx.doi.org/10.1103/PhysRevB.61.8771


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Resumen

A model for the electronic structure of icosahedral quasicrystals is proposed on the basis of a number of pertinent experimental results. From this model we obtain a closed analytical expression for the electrical conductivity accurately describing the most remarkable features observed in the sigma(T) curves of high quality quasicrystals. As a convenient working example we compare the theoretical description provided by our treatment with a series of suitable experimental data for the i-AlCuRu, unveiling a relationship among the density-of-states structure, the sample stoichiometry, and the electrical conductivity of different samples at different temperature ranges.


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©2000 The American Physical Society
Thanks are warmly due to Claire Berger, Thierry Grenet, Didier Mayou, and Stephan Roche for many helpful comments and suggestions as well as for their kind hospitality during my visit at LEPES in Grenoble. I gratefully thank Zbigniew M. Stadnik for interesting conversations and useful suggestions. I also thank M. Victoria Hernández for a critical reading of the manuscript. This work is supported by Universidad Complutense de Madrid through Project No. PR64/99-8510.

Palabras clave:Al-Cu-Fe; Extended electronic states; Resolution photoemission spectroscopy; Crystalline thin-films; Ru quasi-crystals; Pd-Re alloys; Transport-properties; Nmr; Pseudogap; Approximants
Materias:Ciencias > Física > Física de materiales
Ciencias > Física > Física del estado sólido
Código ID:44827
Depositado:02 Nov 2017 16:31
Última Modificación:02 Nov 2017 16:31

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