STM measurements of Charge Density Waves in S-doped NbSe$_{2}$

ORAL

Abstract

Recent scanning tunneling microscopy (STM) measurements have shown that crystal defects have a profound influence on the nature of the charge density wave (CDW) transition in the transition-metal dichalcogenides (TMD). In order to examine this effect systematically, we employ low temperature STM to visualize the CDW transition in intentionally doped TMD crystals. We use a newly designed homebuilt ultra-low-loss, variable temperature STM to perform measurements on crystal samples of NbS$_{x}$Se$_{2-x}$. We describe the effect of the sulphur atoms on both the local and global charge order in this material.

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Authors

  • Ulrich Wurstbauer

    • Dept. of Physics, Columbia University
    • Columbia University, NY, NY

  • Ethan Rosenthal

    • Dept. of Physics, Columbia University

  • Erick F. Andrade

    • Dept. of Physics, Columbia University

  • Carlos Arguello

    • Dept. of Physics, Columbia University

  • Subbaiah P. Chockalingam

    • Dept. of Physics, Columbia University

  • Shuang Jia

    • Dept. of Chemistry, Princeton University

  • Robert J. Cava

    • Dept. of Chemistry, Princeton University

  • Abhay N. Pasupathy

    • Dept. of Physics, Columbia University