Quantum confinement induced oscillatory electric field on stepped Pb(111) films and its influence on surface reactivity

ORAL

Abstract

Using first-principles calculations, we showed that such quantum size effects (QSE) can induce oscillatory electrostatic potential and thus alternating electric field on the surface of the wedge-shaped Pb(111) films. The alternating electric field has significant influence on surface reactivity, leading to selective even or odd layer adsorption preference depending on the charge state of the adatoms, consistent with the odd-layer preference of higher Mg coverage on wedge-shaped Pb(111) films, as observed in experiment.

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Authors

  • Xiaojie Liu

    Beijing Computational Science Research Center, Beijing, 100084, P.R. China

  • Cai-Zhuang Wang

    Ames Lab, Ames Laboratory-U.S. Department of Energy, and Department of Physics and Astronomy, Iowa State University, Ames, Iowa, 50011, USA, Ames Laboratory, DOE \& Iowa State University, Iowa State University, Ames laboratory--US DOE and Iowa State University, Ames Laboratory, Ames Laboratory - U.S. Department of Energy, Iowa State University, Ames Lab, US DOE

  • Myron Hupalo

    Ames Laboratory-U.S. Department of Energy, and Department of Physics and Astronomy, Iowa State University, Ames, Iowa, 50011, USA, Ames Laboratory - U.S. Department of Energy, Iowa State University

  • Hai-Qing Lin

    Beijing Computational Science Research Center, Beijing, 100084, P.R. China, Beijing Computational Science Research Center, Beijing Computational Science Research Center, Beijing 100084, China

  • Kai-Ming Ho

    Ames Lab, Ames Laboratory-U.S. Department of Energy, and Department of Physics and Astronomy, Iowa State University, Ames, Iowa, 50011, USA, Ames Laboratory, DOE \& Iowa State University, Iowa State University, Ames Laboratory, Ames Laboratory - U.S. Department of Energy, Iowa State University

  • Michael Tringides

    Ames Laboratory-U.S. Department of Energy, and Department of Physics and Astronomy, Iowa State University, Ames, Iowa, 50011, USA, Ames Laboratory - U.S. Department of Energy, Iowa State University