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Desorption of Potassium Atoms Stimulated by Electron Radiation of the K/KxAuy System

  • SURFACE PHYSICS AND THIN FILMS
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Abstract

The electron-stimulated desorption (ESD) of K atoms from the potassium layer on the KxAuy surface has been found. The KxAuy layer is formed at a tungsten substrate coated with a gold film with thickness no more five atomic layers. A quasi-resonant dependence of the K atom ESD yield on the energy of exciting electrons is observed. The quasi-resonant dependence is due to the excitation of Au 5p3/2 and 5p1/2 core levels. A model of K atom ESD in the K/KxAuy that adequately describes the processes occurring during ESD of K atoms is proposed. The processes of exciting K atom ESD are shown to take place in the K/KxAuy interface.

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Funding

This work was supported by the Russian Foundation for Basic Research, project no. 20-02-00370.

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Authors and Affiliations

  1. Ioffe Institute, St. Petersburg, 194021, Russia

    Yu. A. Kuznetsov & M. N. Lapushkin

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  1. Yu. A. Kuznetsov
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  2. M. N. Lapushkin
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Correspondence to M. N. Lapushkin.

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Translated by Yu. Ryzhkov

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Kuznetsov, Y.A., Lapushkin, M.N. Desorption of Potassium Atoms Stimulated by Electron Radiation of the K/KxAuy System. Phys. Solid State 62, 2197–2202 (2020). https://doi.org/10.1134/S1063783420110189

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  • DOI: https://doi.org/10.1134/S1063783420110189

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