Bibliographic citations
Espinoza, R., (2009). Influencia de espines en la conductividad eléctrica de cuasicristales icosaédricos: el caso de Al64 Cu23 Fe13 [Tesis, Universidad Nacional Mayor de San Marcos]. https://hdl.handle.net/20.500.12672/261
Espinoza, R., Influencia de espines en la conductividad eléctrica de cuasicristales icosaédricos: el caso de Al64 Cu23 Fe13 [Tesis]. PE: Universidad Nacional Mayor de San Marcos; 2009. https://hdl.handle.net/20.500.12672/261
@misc{renati/477883,
title = "Influencia de espines en la conductividad eléctrica de cuasicristales icosaédricos: el caso de Al64 Cu23 Fe13",
author = "Espinoza Bernardo, Robert Marino",
publisher = "Universidad Nacional Mayor de San Marcos",
year = "2009"
}
-- The influence of the electronic spin on the temperature-dependent conductivity (in particular at low temperatures; i.e. less 90 K) is analyzed for the case of the monocrystalline icosahedral Al64Cu23Fe13 quasicrystal. Within the framework of the linear response theory and after proposing a phenomenological model of Gaussian-type for the contribution of spins to the spectral conductivity I calculate the kinetic coefficient L11 which allows us to determine the temperaturedependent conductivity. This calculation was carried out numerically and analytically. Then, considering the inverse Matthiessen rule (valid for quasicrystals) the previous result is added to an analytical expression for the conductivity (taken from Ref. [Landauro 03]) that considers both, the Hume-Rothery stabilization criterium, and hybridization effects between sp states of aluminium and d states of iron, but no effects due to the spins. In this way an analytical expresión for the total conductivity is obtained which is in good agreement with the numerical calculations and the experimental values (taken from Ref. [Dolinˇsek 07]). Moreover, such analytical relation predicts a conductivity minimum around the temperature of 19.4 K, also in good agreement with the experimental value of 21 K.
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