STM Observations of Lanthanum Vanadate Phase Transition

ORAL

Abstract

Atomic scale studies of phase transitions can offer interesting insight into the fundamental nature of a material’s properties and structure. Lanthanum Vanadate (LaVO3) undergoes a structural phase transition around 139 K from an orthorhombic to a monoclinic structure. Here we will present results from STM investigations of thin (25 nm) films of lanthanum vanadate on LSAT substrates. Temperature dependent topographic and spectroscopic investigations of the surface of the material as it undergoes this structural transition reveal the onset of nanometer scale surface corrugations, and enable us to study the impact of atomic scale strain variations on the local electronic properties of materials.

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Presenters

  • Anna Snelgrove

    Physics, Pennsylvania State University, Department of Physics, The Pennsylvania State University, Physics, Pennsylvania State Univ

Authors

  • Anna Snelgrove

    Physics, Pennsylvania State University, Department of Physics, The Pennsylvania State University, Physics, Pennsylvania State Univ

  • Riju Banerjee

    Physics, Pennsylvania State University, Department of Physics, The Pennsylvania State University, Physics, Pennsylvania State Univ

  • Lavish Pabbi

    Physics, Pennsylvania State University, Department of Physics, The Pennsylvania State University, Physics, Pennsylvania State Univ

  • Bill Dusch

    Physics, Pennsylvania State University, Department of Physics, The Pennsylvania State University, Physics, Pennsylvania State Univ

  • Matthew Brahlek

    Material Science, Pennsylvania State University, Pennsylvania State University, Physics, Pennsylvania State Univ, Materials Science and Engineering, Pennsylvania State University, Department of Materials Science and Engineering, Pennsylvania State University, Materials Science, Pennsylvania State University

  • Roman Engel-Herbert

    Department of Materials Science and Engineering, Pennsylvania State Univ, Material Science, Pennsylvania State University, Physics, Pennsylvania State University, Materials Science and Engineering, Pennsylvania State Universtiy, Pennsylvania State University, Physics, Pennsylvania State Univ, Materials Science and Engineering, Pennsylvania State University, Department of Materials Science and Engineering, Pennsylvania State University, Materials Science, Pennsylvania State University

  • Eric Hudson

    Physics, Pennsylvania State University, Department of Physics, The Pennsylvania State University, Physics, Pennsylvania State Univ