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.

–

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