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arXiv · 0912.3177

Surface Reconstruction of Hexagonal Y-doped HoMnO3 and LuMnO3 studied using low-energy electron diffraction

R. Vasic·J. T. Sadowski·Y. J. Choi·H. D. Zhou·C. R. Wiebe·S. W. Cheong·J. E. Rowe·M. D. Ulrich
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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.

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R. Vasic, J. T. Sadowski, Y. J. Choi, H. D. Zhou, C. R. Wiebe, S. W. Cheong, J. E. Rowe, M. D. Ulrich. 2010-04-07. Surface Reconstruction of Hexagonal Y-doped HoMnO3 and LuMnO3 studied using low-energy electron diffraction. https://doi.org/10.1103/physrevb.81.165417

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