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Field electron energy spectroscopy of alumina-supported platinum adatoms

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Cörper,  Alexander
Chemical Physics, Fritz Haber Institute, Max Planck Society;

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Bozdech,  Georg
Chemical Physics, Fritz Haber Institute, Max Planck Society;

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Ernst,  Norbert
Chemical Physics, Fritz Haber Institute, Max Planck Society;

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Klüner,  Thorsten
Chemical Physics, Fritz Haber Institute, Max Planck Society;

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Freund,  Hans-Joachim
Chemical Physics, Fritz Haber Institute, Max Planck Society;

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Citation

Cörper, A., Bozdech, G., Ernst, N., Klüner, T., & Freund, H.-J. (2005). Field electron energy spectroscopy of alumina-supported platinum adatoms. Physica Status Solidi B, 242(12), 2462-2467. doi:10.1002/pssb.200540088.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0011-07D8-7
Abstract
Field electron energy spectroscopy and density functional calculations have been employed to characterize electronic properties of single Pt-adatoms deposited on a thin alumina film. For Pt/Al2O3/NiAl(110) strong current enhancements were measured about 1.4 eV below the Fermi energy. No features were observed for clean Al2O3/NiAl(110) and Pt/NiAl(110) in the accessible energy range. As an explanation we propose a resonance tunneling mechanism involving an occupied electronic state of the Pt adatom close to the Fermi level.