Atomically-resolved scanning tunneling microscopy of the Cu<sub>2</sub>O(110) surface

ORAL

Abstract

Photocatalytic reactions on the surface of cuprous oxide (Cu2O) depend on the atomic scale structure of the Cu2O surfaces with respect to surface terminations, reconstructions, and defects. Building on previous work on the Cu2O(111) surface [1,2], we perform high-resolution ultrahigh vacuum (UHV) scanning tunneling microscopy (STM) on the (110) surface of bulk crystal Cu2O. The Cu2O(110) surface reveals multiple surface terminations, aggregation of defects and periodic distortions of the atomic rows on the stoichiometric surface termination. Surface assignments have been made by correlating STM images with density functional theory (DFT) calculations combined with STM simulations using the Ingrained tool [3].



[1] R. Zhang et al., Phys. Chem. Chem. Phys. 20, 27456 (2018)

[2] L. Li et al., Chem. Mater. 30, 1912 (2018)

[3] E. Schwenker et al., Small 18, 2102960 (2022)

*Work performed at the Center for Nanoscale Materials, a U.S. Department of Energy Office of Science User Facility, was supported by the U.S. DOE, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357.

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Presenters

  • Jeffrey R Guest

    • Argonne National Laboratory

Authors

  • Jeffrey R Guest

    • Argonne National Laboratory

  • Joseph A Smerdon

    • U. of Central Lancashire

  • Rui Zhang

    • Anhui University

  • Joshua T Paul

    • Argonne National Laboratory

  • Laszlo Frazer

    • Monash University

  • Kenneth R Poeppelmeier

    • Northwestern University

  • Maria K Chan

    • Argonne National Laboratory