Comparative Study of Surface Structural and Physical Properties of Sr<sub>3</sub>T<sub>2</sub>O<sub>7</sub> (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