Temperature dependence of the electronic transport in Al-Cu-Fe phases

C. V. Landauro, H. Solbrig

Research output: Contribution to journalArticle

37 Scopus citations

Abstract

The temperature dependences of the electronic conductivity and the thermoelectric power are theoretically examined for the i-Al-Cu-Fe (1/1) approximant in comparison with both crystalline ω-Al7Cu2Fe and amorphous Al84Fe16. Our study is based on ab initio results for the spectral curves which are obtained by means of the linear muffin-tin orbitals (LMTO) method and the Kubo-Greenwood formula. Thermopowers are calculated after the Mott formula. We show that a realistic variety of thermopower curves versus temperature results from small shifts of the Fermi energy in a narrow resistivity peak. A simple model of the energy-dependent resistivity is suggested which supports the interpretation of the thermopower curves.
Original languageAmerican English
Pages (from-to)600-603
Number of pages4
JournalMaterials Science and Engineering A
DOIs
StatePublished - 15 Dec 2000
Externally publishedYes

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