Less than perfect C$_{\mathrm{2v}}$ symmetry: loss of mirror plane symmetry in angle-resolved photoemission

ORAL

Abstract

The effects of lack of in-plane $C_{2}$ invariance of the crystal on the angle-resolved photoemission spectra are investigated for Mo(112). The results indicate that, for Mo(112), the absence of $C_{2}$ symmetry gives rise to noticeable asymmetry in the ARPES band mapping along the \textless\ 1 1 -1\textgreater\ direction. The apparent differences in the experimental band structure in $+$k versus --k wave vectors can be understood quantitatively in terms of the asymmetries in the electronic bulk band structure, photoelectron diffraction as well as the initial state contribution to the photoemission matrix elements.

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Authors

  • Thomas Scott

    University of Nebraska, Lincoln

  • Keisuke Fukutani

    Department of Physics, University of Nebraska, Lincoln, 68588, USA

  • Hirokazu Hayashi

    Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan

  • Tula Paudel

    Department of Physics, University of Nebraska, Lincoln, 68588, USA, Department of Physics, University of Nebraska-Lincoln, University of Nebraska, Lincoln, NE

  • Eike Schwier

    Hiroshima Synchrotron Radiation Center, Hiroshima University, 2-313 Kagamiyama, Higashi-Hiroshima 739-0046, Japan

  • Taiki Horike

    Hiroshima Synchrotron Radiation Center, Hiroshima University, 2-313 Kagamiyama, Higashi-Hiroshima 739-0046, Japan, Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan

  • Taiki Horike

    Hiroshima Synchrotron Radiation Center, Hiroshima University, 2-313 Kagamiyama, Higashi-Hiroshima 739-0046, Japan, Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan

  • Jian Jiang

    Hiroshima Synchrotron Radiation Center, Hiroshima University, 2-313 Kagamiyama, Higashi-Hiroshima 739-0046, Japan

  • Hideaki Iwasawa

    Hiroshima Synchrotron Radiation Center, Hiroshima University, 2-313 Kagamiyama, Higashi-Hiroshima 739-0046, Japan

  • Taiki Horike

    Hiroshima Synchrotron Radiation Center, Hiroshima University, 2-313 Kagamiyama, Higashi-Hiroshima 739-0046, Japan, Graduate School of Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan

  • Evgeny Tsymbal

    Department of Physics, University of Nebraska, Lincoln, 68588, USA, Department of Physics, University of Nebraska-Lincoln, University of Nebraska, Lincoln, NE, Department of Physics and Astronomy, University of Nebraska - Lincoln

  • Yaroslav Losovyj

    Department of Chemistry, Indiana University, E.Kirkwood Ave Bloomington, IN 47405

  • Peter Dowben

    Department of Physics, University of Nebraska, Lincoln, 68588, USA, Dept. of Physics and Astronomy, Nebraska Center for Materials and Nanoscience, University of Nebraska, Lincoln, Nebraska 68588, USA