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The Generalization of the Kinetic Equations and the Spectral Conductivity Function to Anisotropic Systems: Case T-Al72.5Mn21.5Fe6 Complex Metallic Alloy

Petar Popčević ; Laboratory for the Physics of Transport Phenomena, Institute of Physics, Bijenička c. 46, P. O. Box 304, HR-10001 Zagreb, Croatia
Ivo Batistić orcid id orcid.org/0000-0003-2292-3407 ; Department of Physics, Faculty of Science, University of Zagreb, Bijenička c. 32, HR-10000 Zagreb, Croatia
Eduard Tutiš ; Laboratory for the Physics of Transport Phenomena, Institute of Physics, Bijenička c. 46, P. O. Box 304, HR-10001 Zagreb, Croatia
Kristijan Velebit ; Laboratory for the Physics of Transport Phenomena, Institute of Physics, Bijenička c. 46, P. O. Box 304, HR-10001 Zagreb, Croatia
Marc Heggen ; Institut für Festkörperforschung, Forschungszentrum Jülich, D-52425 Jülich, Germany
Michael Feuerbacher ; Institut für Festkörperforschung, Forschungszentrum Jülich, D-52425 Jülich, Germany


Puni tekst: engleski pdf 292 Kb

str. 95-100

preuzimanja: 438

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Sažetak

Electrical conductivity, σ, and thermoelectric power, S, of the monocrystalline T-Al72.5Mn21.5Fe6complex metallic alloy have been investigated in the temperature range from 2 to 300 K. The crystallographic-direction-dependent measurements were performed along the [0 0 1], [0 1 0] and [1 0 0]directions of the orthorhombic unit cell, where the stacking direction is along the [0 1 0] direction. The electrical conductivity exhibits a very small anisotropy, and in all directions shows the non-metallic behaviour with square root, √T, temperature behaviour and finite value in the T = 0 limit. Spectral conductivity function, σS(E), constructed out of measurements, reflects anisotropy of the experimental data and indicate non-analytic square root like singularity at Fermi level. Asymmetry of the spectral conductivity function has been extracted from the thermoelectric power data.

Ključne riječi

spectral conductivity function, anisotropic systems, transport coefficients, complex metallic alloys, Taylor phases

Hrčak ID:

52242

URI

https://hrcak.srce.hr/52242

Posjeta: 1.062 *