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

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arxiv 0912.3177 v2 pith:D2FQJ5LE submitted 2009-12-16 cond-mat.str-el cond-mat.other

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 This is my paper
classification cond-mat.str-el cond-mat.other
keywords surfaceelectrondiffractionleedreconstructionenergyhexagonallow-energy
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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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