Dresden 2009 – wissenschaftliches Programm
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DS: Fachverband Dünne Schichten
DS 26: Poster II
DS 26.35: Poster
Mittwoch, 25. März 2009, 09:30–12:30, P5
Tranport properties of ultrathin AlOx interfaces — •Miroslava Dieskova1, Peter Bokes1, and Andrea Ferretti2 — 1Physics Department FEI STU, Bratislava, Slovak Republic — 2INFM-S3 and Physics Department,University of Modena and Reggio Emilia, Modena, Italy
We study transport properties of the ultrathin AlOx interfaces between aluminum electrodes. We employ combination of the Landauer formulation of the electronic transport within the framework of the maximally localized Wannier functions, implemented in the computational package WanT [1][2]. Furthermore, the knowledge of Wannier functions allows direct connection between electronic transport properties and the nature of chemical bonds. We characterise two different geometrical and chemical arrangements of the oxide interface with different local electronic structure and hence with different transmission spectra. Our results indicate how transport measurements can complement experimental structural studies of these technologically important interfaces.
The work has been performed under the Project HPC-EUROPA++ (RII3-CT-2003-506079) with the support of the European Community - Reaserch Infrastructure Action under the FP6 "Structuring the European Research Area" Programme.
[1] www.wannier-transport.org
[2] A. Calzolari, N. Marzari, I. Souza, and M. Buongiorno Nardelli, Phys. Rev. B , 69, 035108, (2004).