Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials
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Electron-stimulated desorption of lithium atoms adsorbed on the surface of gold-lithium intermetallic

Yu.A. Kuznetsov, M.N. Lapushkin

Ioffe Institute

DOI: 10.26456/pcascnn/2021.13.235

Original article

Abstract: A thin film of the intermetallic compound  LixAu was obtained at room temperature by deposition Li atoms onto a layer of adsorbed gold on the tungsten surface. The processes of electron-stimulated desorption of Li atoms from the surface are investigated. It is shown that electron-stimulated desorption of Li atoms can be observed only in the case when at least one monolayer of Li and Au atoms is deposited. The dependence of the electron-stimulated desorption yield of Li atoms on the amount of deposited has a maximum when two monolayers of atoms Li are deposited on Au . The results obtained indicate the LixAuy formation of various stoichiometry: from with a deficit of lithium atoms to the deposition of two monolayers of atoms. In the kinetic energy distribution of desorbed Li atoms, two peaks were found: high-energy and low-energy. The first of them is associated with the desorption of Li atoms from  LixAuy , and the second with the desorption of Li atoms from the upper monolayer of Li atoms.

Keywords: electron-stimulated desorption, adsorption, alkali metals, gold, intermetallic compounds

  • Yurij A. Kuznetsov – Researcher, Ioffe Institute
  • Mikhail N. Lapushkin – Ph. D., Docent, Senior Researcher, Ioffe Institute

Reference:

Kuznetsov, Yu.A. Electron-stimulated desorption of lithium atoms adsorbed on the surface of gold-lithium intermetallic / Yu.A. Kuznetsov, M.N. Lapushkin // Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials. – Tver: TSU, 2021. — I. 13. — P. 235-242. DOI: 10.26456/pcascnn/2021.13.235. (In Russian).

Full article (in Russian): download PDF file

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