Surface reconstruction of hexagonal Y-dopedHoMnO3andLuMnO3studied using low-energy electron diffraction Academic Article uri icon

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abstract

  • We have investigated the (0001) surfaces of several hexagonal manganite perovskites by low-energy electron diffraction (LEED) in order to determine if the surface periodicity is different from that of the bulk materials. These LEED studies were conducted using near-normal incidence geometry with a low energy electron microscope (LEEM)/LEED apparatus from room temperature to 1200 degrees Celsius and with an electron energy in the range of 15-50 eV. Diffraction patterns showed features of bulk-terminated periodicity as well as a 2\times2 surface reconstruction. Possible origins for this surface reconstruction structure are discussed and comparisons are made with surface studies of other complex oxides.

authors

  • Vasić, R
  • Sadowski, JT
  • Choi, YJ
  • Zhou, HD
  • Wiebe, Christopher
  • Cheong, SW
  • Rowe, JE
  • Ulrich, MD

publication date

  • April 15, 2010