Electronic Structure of LaTe$_{2}$

ORAL

Abstract

Current work on the charge density wave system LaTe$_{2}$ indicates the existence of near Fermi energy gapping due to \textbf{q}$_{CDW}$=\textbf{a}*/2 and \textbf{b}*/2. We find this band gapping to be weaker than originally thought, particularly for the near $\Gamma $ point contour. In addition, we find evidence of gap anisotropy which maintains the expected four fold symmetry of the crystal. Finally, we observe evidence of non-negligible kz dependence, originally considered minor. This appears to alter the CDW nesting as well as the gap anisotropy and has considerable importance to future studies of Rare-Earth Dichalcogenides.

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Authors

  • Daniel Garcia

  • Gey-Hong Gweon

    • Department of Physics, University of California, Berkeley

  • Shuyun Zhou

    • Department of Physics, University of California, Berkeley; Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley

  • Jeff Graf

    • Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley

  • Chris Jozwiak

    • Department of Physics, University of California, Berkeley

  • M.H. Jung

    • National Research Laboratory for Material Science, KBSI

  • Y.S. Kwon

    • Department of Physics, Sung Kyun Kwan University, Suwon

  • Alessandra Lanzara

    • Department of Physics, University of California, Berkeley; Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley