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MA: Magnetismus

MA 17: Spinabh
ängiger Transport II

MA 17.7: Vortrag

Montag, 7. März 2005, 12:00–12:15, TU H1012

Conductivity of ultrathin Fe layers: influence of quantum confinement and local defects — •Dimitri V. Fedorov^1,2, Peter Zahn¹, and Ingrid Mertig¹ — ¹Physical-Technical Institute, Ural Branch of Russian Academy of Sciences, 426001 Izhevsk, Russia — ²Martin-Luther-Universität Halle-Wittenberg, Fachbereich Physik, Fachgruppe Theoretische Physik, D-06099 Halle, Germany

We propose a model for the description of the transport properties of metallic films on a large scale of slab thickness. This model is based on solving the linearized Boltzmann equation in the relaxation-time approximation using ab initio calculations within the framework of the density functional theory. The expression for the relaxation time is derived from the microscopic treatment of the scattering processes and provides the correct thickness dependence for very thin as well as very thick films.

The method is applied to the calculation of the in-plane conductivity and the Drude-type plasma frequency of thin Cu and magnetic Fe films for different crystal orientations in the thickness range between 1 and 32 monolayers.