Comparative Study of Surface Structural and Physical Properties of Sr3T2O7 (T = Mn, Ru)

ORAL

Abstract

Double-layered Ruddlesden-Popper oxides are known to exhibit a strong correlation between octahedral distortion and physical properties. Using low-energy electron diffraction (LEED) and high-resolution electron energy loss spectroscopy (HREELS), we have investigated the surface structural and physical properties of Sr3T2O7 (T = Mn, Ru). While surface RuO6 octahedron in Sr3Ru2O7 has both rotation (~ 12°) and tilt (~ 3°), our LEED – IV analysis reveals that MnO6 octahedron in Sr3Mn2O7 has a similiar rotation (~ 11°) but no tilt. HREELS data suggest that both the surface of Sr3Mn2O7 and Sr3Ru2O7 are semiconducting but for different reasons. The implication of these findings will be discussed.

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Presenters

  • Yifan Yang

    Louisiana State University

Authors

  • Yifan Yang

    Louisiana State University

  • Lingyi Xing

    Louisiana State University

  • Mohammad Saghayezhian

    Department of Physics and Astronomy, Baton Rouge, Louisiana 70803, US, Louisiana State University, Louisiana State University, Department of Physics & Astronomy, Louisiana State University, Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Physics and astronomy, Louisiana State University

  • Rongying Jin

    Louisiana State University, Physics, Louisiana State University, Physics and astronomy, Louisiana State University, 2Condensed Matter Physics and Materials Science Departement, Brookhaven National Laboratory, Department of Physics and Astronomy, Louisiana State University, Physics and Astronomy, Louisiana State University

  • E Ward Plummer

    Louisiana State University, Department of Physics & Astronomy, Louisiana State University, Dept. of Physics and Astronomy, Louisiana State University, USA, Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Physics and astronomy, Louisiana State University