Electrical resistivity of alkali metals: Inflation-deflation effect of Fermi surface

The electrical resistivity of liquid alkali metals was calculated using the extended Ziman formula. The possible role of Fermi surface (FS) inflation-deflation (ID) was examined. The calculations reveal that replacing the sharp free electron FS by the expanded (respectively, contracted) one substant...

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Bibliographic Details
Published in:Philosophical magazine (Abingdon, England) England), 2009-04, Vol.89 (10), p.885-893
Main Authors: Ben Abdellah, A., Bouziane, K., Mujibur Rahman, S.M., Grosdidier, B., Gasser, J.G.
Format: Article
Language:English
Subjects:
Condensed Matter
Condensed matter: electronic structure, electrical, magnetic, and optical properties
electrical resistivity
Electron states
Exact sciences and technology
Fermi surface
Fermi surface: calculations and measurements
effective mass, g factor
inflation-deflation effect
liquid alkali metal
Physics
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Summary:The electrical resistivity of liquid alkali metals was calculated using the extended Ziman formula. The possible role of Fermi surface (FS) inflation-deflation (ID) was examined. The calculations reveal that replacing the sharp free electron FS by the expanded (respectively, contracted) one substantially improves the results. This was achieved directly by considering a FS correction factor of the Fermi radius and indirectly by a shift in the muffin-tin zero (MTZ) of the potential from its initial values. Consequently, a correlation between the shift of the MTZ of the potential and the FS factor parameter is revealed. The role of this correlation might contribute to a better understanding of the electron transport properties of other liquid metals and their alloys.
ISSN:1478-6435
1478-6443
1478-6433
DOI:10.1080/14786430902802669